Manasseh [was] twelve years old when he began to reign, and reigned fifty and five years in Jerusalem. And his mother’s name [was] Hephzi-bah.
Jewish Publication Society of America Version (JPS1917) - 2 Kings 21:1 >Manasseh was twelve years old when he began to reign; and he reigned five and fifty years in Jerusalem; and his mother's name was Hephzi-bah.