Leto Atreides II
From Dune2k.com Wiki
Leto Atreides II (10,207-13,725 A.G.), actually the second son of Paul-Muad'Dib Atreides to bear the name Leto II (the first died at the age of two during the Desert War), known as the God Emperor and the Tyrant, was quite possibly one of the longest-lived humans in history.
