CREATE TABLE table_14766 ("Election" TEXT, "1st Member" TEXT, "1st Party" TEXT, "2nd Member" TEXT, "2nd Party" TEXT)

Which 1st Party has a 1st Member of william wither bramston beach?
SELECT "1st Party" FROM table_14766 WHERE "1st Member" = 'william wither bramston beach'
SELECT "1st Party" FROM "table_14766" WHERE "1st Member" = 'william wither bramston beach'