CREATE TABLE table_203_321 (id DECIMAL, "sheriff" TEXT, "start of term" DECIMAL)

who was the sheriff in suffolk county before amza biggs first term there as sheriff ?
SELECT "sheriff" FROM table_203_321 WHERE "start of term" < (SELECT "start of term" FROM table_203_321 WHERE "sheriff" = 'amza biggs' ORDER BY "start of term" LIMIT 1) ORDER BY "start of term" DESC LIMIT 1
SELECT "sheriff" FROM "table_203_321" WHERE "start of term" < (SELECT "start of term" FROM "table_203_321" WHERE "sheriff" = 'amza biggs' ORDER BY "start of term" NULLS FIRST LIMIT 1) ORDER BY "start of term" DESC NULLS LAST LIMIT 1