A spelling variation of the Irish name Alan, meaning “handsome and cheerful.” And who doesn’t want those traits for their son? It’s just so much better than “handsome and kind of an asshole.”
Famous people named Allan:
Nobel Prize winner Allan Cormack; novelist Edgar Allan Poe; actor/photographer Allan Arbus; film director Allan Dwan.
There are places named Allan in France, Canada, Iran, and Australia.