He must have started at the bottom of the sea as his mighty snout pushed up enough silt to form piles of land.
He settled on the land and wielded a mighty mace (his trotters weren’t just for trotting) so it was best to stay on the right side of him. Also he could dig wells for fresh water.
For some peculiar reason, PELE the Volcano Goddess turned him on and he started snuffling after her. She thought he had the manners of a pig.
But when he started extinguishing her lovely volcanic fires with mud she was forced to think again. In other words: "I still think he’s a pig but perhaps I should marry him before he puts me out of business."