From the Greek Λεανδρος (Leandros)
which means "lion of a man" from Greek λεων (leon)
"lion" and ανδρος (andros)
"of a man". In Greek legend Leander was the lover of Hero. Every night he swam across the Hellespont to meet her, but on one occasion he was drowned when a storm arose. When Hero saw his dead body she threw herself into the waters and perished.