Patrick Revere was one of Patrick's famous ancestors and his great-great-great uncle who was featured in the episode "Pest of the West."
Revere was a sea star, much like the rest of his family. He had long, braided brown hair, which was partially covered by his hat, which matched his blue and red military uniform.
Revere's role in Bikini Bottom history was to warn people when the man-eating mollusks were coming. Nobody believed him about the mollusks though, thinking he was just a lunatic, until they actually saw them and ran away.
Patrick Revere is a parody of Paul Revere who warned Lexington of the Redcoats but failed to warn Concord at the beginning of the Revolutionary War.
According to Patrick, his ancestor's supposed fame is why he does not care about life accomplishments as Revere already did it for him.
It is possible that he is the husband of one of Patrick's great-great-grandparents' sister.