He was the eldest son of Emperor Lê Thái Tông and Consort Dương Thị Bí.
[2] However, he was largely unsupported by many imperial court officials because he killed his brother, King Lê Nhân Tông as a "inhuman" action.
[3] During his short reign, he had to face many conflicts and coups from the old officials, who followed his grandfather and father since the dynasty was founded.
[4] After this affair, Thiên Hưng became more suspicious, and he started installed his inner supporters into the Royal court's important official positions.
Some unofficial reports stated that the coup leaders drove him to suicide, and Thiên Hưng Đế died in 1460, at the age of 21.