Henry Rogers is a famous archaeologist, and the grand-uncle of Shaggy Rogers.
He is a Caucasian male with white hair and a goatee.
Insert details here.
Scooby-Doo (DC Comics)
When he disappeared on an expedition, Shaggy was called to Cairo to hear the reading of his will. It turned out he wasn't dead - his two assistants had turned on him in order to steal a priceless ruby scarab he found.