Valentinian is known as the last great emperor of the West. After his death, the Western Roman Empire accelerated in its decline, while the Eastern Empire continued to thrive.
Valentinian had a long career as a successful general. However, in 375, visiting envoys to his count enraged him so much a blood vessel burst in his head, and he dropped over dead.
He made his son, Gratian, a junior emperor at the age of 8 and a full emperor at 16 at the death of his father. His younger brother, Valentinian II, joined him as emperor at the age of 4. He was found hanged at the age of 21. Gratian had already been assassinated at the age of 24.