The name Olaf is a boy's name of Norse origin meaning "ancestor's relic". Olaf and is often added to lists like Baby Names from Children's Books and discussed in our forums with posts like "Change one letter (5 names)".
From the experts:
Olaf, though sainted and regal in Norway, is slightly oafish here. It is one of those ethnic names that has become completely familiar in the U.S. without ever becomng assimilated. Now that he's a comical character in Disney's Frozen, he might get some more attention.
Olaf's solid Scandinavian history includes various kings of Norway, from the eleventh century St. Olaf (often mentioned by the Betty White character on Golden Girls) to the recent Olaf V.