1 Kings 16:23-24

23In the thirty-first year of Asa king of Judah, Omri began to reign over Israel, — twelve years; he reigned six years in Tirzah.

24And he bought the hill Samaria of Shemer for two talents of silver; and built on the hill, and called the name of the city that he built, after the name of Shemer, owner of the hill, Samaria.