2 Kings 15:2

15:2 He was sixteen years old when he began to reign, and he reigned for fifty-two years in Jerusalem. His mother’s name was Jecholiah, who was from Jerusalem.

2 Kings 21:1

Manasseh’s Reign over Judah

21:1 Manasseh was twelve years old when he became king, and he reigned for fifty-five years in Jerusalem. His mother was Hephzibah.