Derived from a Scottish place name, Leamhnachd, meaning “elm grove.” Also much easier to pronounce than Leamhnachd.
Len, Lennie, Lenni, Lenny, Nox.
Famous people named Lennox-unisex:
Boxer Lennox Lewis; composer Lennox Berkeley; runner Lennox Miller.
The Thane of Lennox is a character in Shakespeare’s Macbeth.