0000950154-01-500192 DEFA14A 1 20010411 DONEGAL GROUP INC 0000800457 6331 232424711 DE 1231 DEFA14A 34 000-15341 1600118 1195 RIVER RD PO BOX 302 MARIETTA PA 17547-0302 7174261931 1195 RIVER ROAD BOX 302 MARIETTA PA 17547 DEFA14A 1 dgi-defa14a_51491.txt SUPPLEMENT TO DONEGAL PROXY STATEMENT