1 Kings 16:23-24

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

24He bought the hill of Samaria from Shemer for two talents That is, about 150 pounds or about 68 kilograms of silver and built a city on the hill, calling it Samaria, after Shemer, the name of the former owner of the hill.