Who is Mr. Wilson from Joseph Andrews ; with Shamela ; and Related Writings: Authoritative Texts, Backgrounds and Sources, Criticism and what is their importance?

Mr. Wilson is a gentleman who offers hospitality to Joseph, Adams and Fanny on their journey to the country. During their stay, he shares his life story with Adams, including the fact that his eldest son was stolen by gypsies many years ago. Eventually, the peddler reveals that Mr. Wilson is Joseph's biological father and Mr. Wilson gives Joseph his blessing to marry Fanny.