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  <xsd:import namespace="http://fasb.org/us-roles/2022" schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-roles-2022.xsd" />
  <xsd:import namespace="http://fasb.org/us-gaap/2022" schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd" />
  <xsd:import namespace="http://fasb.org/srt/2022" schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd" />
  <xsd:element id="glbz_DataProcessingAndItemProcessingServices" name="DataProcessingAndItemProcessingServices" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="glbz_LoanCollectionCosts" name="LoanCollectionCosts" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element name="ShareholderDividendReinvestment" id="glbz_ShareholderDividendReinvestment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="OrganizationalAbstract" id="glbz_OrganizationalAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfAllowanceForLoanLossAndTheUnearnedIncomeOnLoansTableTextBlock" id="glbz_ScheduleOfAllowanceForLoanLossAndTheUnearnedIncomeOnLoansTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FairValueHierarchyOfFinancialInstrumentsTableTextBlock" id="glbz_FairValueHierarchyOfFinancialInstrumentsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NonAccrualAnd90DaysOrMoreAndStillAccruingLoansToGrossLoans" id="glbz_NonAccrualAnd90DaysOrMoreAndStillAccruingLoansToGrossLoans" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="AllowanceForCreditLossesToNonAccrualAnd90DaysOrMoreAndStillAccruingLoans" id="glbz_AllowanceForCreditLossesToNonAccrualAnd90DaysOrMoreAndStillAccruingLoans" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="IndividuallyEvaluatedForImpairmentAbstract" id="glbz_IndividuallyEvaluatedForImpairmentAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CollectivelyEvaluatedForImpairmentAbstract" id="glbz_CollectivelyEvaluatedForImpairmentAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FinancingReceivableNonaccrualStatusRollForward" id="glbz_FinancingReceivableNonaccrualStatusRollForward" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TransfersIntoNon-Accrual" id="glbz_TransfersIntoNon-Accrual" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NonaccrualLoanPaidOff" id="glbz_NonaccrualLoanPaidOff" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="LoansAndLeasesReceivableImpairedAtFairValue" id="glbz_LoansAndLeasesReceivableImpairedAtFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsFairValueAbstract" id="glbz_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsFairValueAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CashAndDueFromBanksFairValue" id="glbz_CashAndDueFromBanksFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="glbz_InterestBearingDepositFairValue" name="InterestBearingDepositFairValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <xsd:element name="FederalFundsSoldFairValue" id="glbz_FederalFundsSoldFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="GroundRentsFairValue" id="glbz_GroundRentsFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="BankOwnedLifeInsuranceFairValue" id="glbz_BankOwnedLifeInsuranceFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="AccruedInterestReceivableFairValue" id="glbz_AccruedInterestReceivableFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsFairValueAbstract" id="glbz_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsFairValueAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ImpairedFinancingReceivableRelatedAllowanceTwo" id="glbz_ImpairedFinancingReceivableRelatedAllowanceTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="InvestmentsInRestrictedStock" id="glbz_InvestmentsInRestrictedStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="glbz_IncreaseDecreaseInUnrealizedGainsLossesOnAvailableForSaleSecuritiesNetOfTaxes" name="IncreaseDecreaseInUnrealizedGainsLossesOnAvailableForSaleSecuritiesNetOfTaxes" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element name="FairValuesOfFinancialInstrumentsAbstract" id="glbz_FairValuesOfFinancialInstrumentsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfSecuritiesContinuousUnrealizedLossPositionMoreThanTwelveMonths" id="glbz_NumberOfSecuritiesContinuousUnrealizedLossPositionMoreThanTwelveMonths" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element id="glbz_NumberOfBorrowersConsumerAndIndirectLoans" name="NumberOfBorrowersConsumerAndIndirectLoans" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element name="LeasedPropertyAxis" id="glbz_LeasedPropertyAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LeasedPropertyDomain" id="glbz_LeasedPropertyDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ConstructionAndLandDevelopmentMember" id="glbz_ConstructionAndLandDevelopmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MinimumCapitalRequiredBaselIiiAxis" id="glbz_MinimumCapitalRequiredBaselIiiAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MinimumCapitalRequiredBaselIiiDomain" id="glbz_MinimumCapitalRequiredBaselIiiDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="UnrecognizedFinancialInstrumentAbstract" id="glbz_UnrecognizedFinancialInstrumentAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommitmentsToExtentCredit" id="glbz_CommitmentsToExtentCredit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="StandbyLettersOfCredit" id="glbz_StandbyLettersOfCredit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="AccruedInterestPayableFairValue" id="glbz_AccruedInterestPayableFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="UnrecognizedFinancialInstrumentsFairValueAbstract" id="glbz_UnrecognizedFinancialInstrumentsFairValueAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommitmentsToExtendCreditFairValue" id="glbz_CommitmentsToExtendCreditFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="StandbyLettersOfCreditFairValue" id="glbz_StandbyLettersOfCreditFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="glbz_NumberOfLoans" name="NumberOfLoans" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <xsd:element id="glbz_FinancingReceivableModificationsSubsequentDefaultNumberOfAccounts" name="FinancingReceivableModificationsSubsequentDefaultNumberOfAccounts" nillable="true" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="glbz_InterestBearingDepositsCarryingValue" name="InterestBearingDepositsCarryingValue" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <xsd:element id="glbz_InterestBearingDepositsInBanksAndOtherFinancialInstitutionsIncludingFederalFundsSold" name="InterestBearingDepositsInBanksAndOtherFinancialInstitutionsIncludingFederalFundsSold" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="debit" />
  <xsd:element id="glbz_FinancingReceivableAllowanceForCreditLossesNonaccrualWriteDowns" name="FinancingReceivableAllowanceForCreditLossesNonaccrualWriteDowns" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="glbz_CashFlowPresentationPolicyTextBlock" name="CashFlowPresentationPolicyTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="glbz_PercentageOfLoansAndLeasesReceivableAllowance" name="PercentageOfLoansAndLeasesReceivableAllowance" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" />
  <xsd:element id="glbz_IncreaseDecreaseInLoansAndLeasesReceivable" name="IncreaseDecreaseInLoansAndLeasesReceivable" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="glbz_PercentageOfIncreaseDecreaseInLoansAndLeasesReceivable" name="PercentageOfIncreaseDecreaseInLoansAndLeasesReceivable" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="glbz_AverageOfLoansAndLeasesReceivableNetOfDeferredIncome" name="AverageOfLoansAndLeasesReceivableNetOfDeferredIncome" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="glbz_NetChargeOffsToAverageLoansAndLeasesReceivablesAsPercentage" name="NetChargeOffsToAverageLoansAndLeasesReceivablesAsPercentage" nillable="true" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="glbz_ReserveForUnfundedCommitments" name="ReserveForUnfundedCommitments" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="glbz_ReductionOfUnfundedReserve" name="ReductionOfUnfundedReserve" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="glbz_ProvisionsChargedToOperations" name="ProvisionsChargedToOperations" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="glbz_LoansAndLeasesReceivableAllowanceForLoanLossesTableTextBlock" name="LoansAndLeasesReceivableAllowanceForLoanLossesTableTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="glbz_DisclosureOfReserveForUnfundedCommitmentsTableTextBlock" name="DisclosureOfReserveForUnfundedCommitmentsTableTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element id="glbz_UnfundedCommitments" name="UnfundedCommitments" nillable="true" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="glbz_IncreaseDecreaseInGroundRent" name="IncreaseDecreaseInGroundRent" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="credit" />
  <xsd:element id="glbz_DepreciationAmortizationAndAccretionOfInvestmentSecuritiesAvailableForSaleNet" name="DepreciationAmortizationAndAccretionOfInvestmentSecuritiesAvailableForSaleNet" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="glbz_FarmlandMember" name="FarmlandMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="glbz_SbaGuarantyMember" name="SbaGuarantyMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="glbz_CommercialAndIndustrialPortfolioSegmentMember" name="CommercialAndIndustrialPortfolioSegmentMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="glbz_FinancingReceivables30To89DaysPastDueMember" name="FinancingReceivables30To89DaysPastDueMember" nillable="true" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" xbrli:periodType="duration" />
  <xsd:element id="glbz_AllowanceForCreditLosses" name="AllowanceForCreditLosses" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="glbz_AllowanceForCreditLossesTaxAmount" name="AllowanceForCreditLossesTaxAmount" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" xbrli:balance="debit" />
  <xsd:element id="glbz_AllowanceForCreditLossesNetOfTax" name="AllowanceForCreditLossesNetOfTax" nillable="true" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" xbrli:balance="credit" />
  <xsd:element id="glbz_CumulativeEffectOfAdoptingAsc326ToRetainedEarningsTableTextBlock" name="CumulativeEffectOfAdoptingAsc326ToRetainedEarningsTableTextBlock" nillable="true" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" />
  <xsd:element name="GroundRent" id="glbz_GroundRent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="NetDecreaseInUnrealizedDepreciationOnSwaps" id="glbz_NetDecreaseInUnrealizedDepreciationOnSwaps" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="NoninterestRevenueServiceChargesOnDepositAccounts" id="glbz_NoninterestRevenueServiceChargesOnDepositAccounts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
</xsd:schema>
