1 Kings 16:23-24

23In the thirty-first year of Asa king of Judah, Omri became king over Israel, and reigned twelve years. Six years he reigned in Tirzah.

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