Table schema:
CREATE TABLE table_30121096_1 (poor_law_union VARCHAR, area__acres__ VARCHAR, civil_parish VARCHAR)

Question: How many poor law unions have an area of 262 acres and is in drinagh civil parish?
SQL: SELECT COUNT(poor_law_union) FROM table_30121096_1 WHERE area__acres__ = 262 AND civil_parish = "Drinagh"