Question: Which District has a First elected of 1858, and a Result of Retired Republican Gain, and an Incumbent of William Millward?
SQL: SELECT "District" FROM "2-1434986-13" WHERE "First elected" = 1858.0 AND "Result" = 'Retired Republican Gain' AND "Incumbent" = 'William Millward';

Question: Which Result has a District of Pennsylvania 13?
SQL: SELECT "Result" FROM "2-1434986-13" WHERE "District" = 'Pennsylvania 13';

Question: Which First elected is the lowest one that has an Incumbent of William Stewart?
SQL: SELECT MIN("First elected") FROM "2-1434986-13" WHERE "Incumbent" = 'William Stewart';