His maternal grandfather is Bùi Cầm Hổ, one official in era of Emperor Lê Thái Tổ.
Officials who launched the coup wanted to put Prince Lê Khắc Xương to the throne, but he refused.
However, during the early time of his reign, Emperor Lê Thánh Tông started to worry about his elder brother who should have been the real king, not him.
[1] Prince Lê Khắc Xương died in 1476 in Đông Kinh.
His children were not allowed to keep the family name of the royal court as Lê, and all were requested to change their clan name to Bùi of their grandmother.