Who is Senator Simon Addams from Stern Men and what is their importance?

Born in 1904 after the murder of his fiery father, Valentine R. Addams, Simon is the twin brother of the ruthless lobsterman, Angus Adams. As a boy Simon is fat and listless and he grows into an intellectual, unnaturally large, with a misshapen head, and large doughy hands - and a deathly fear of the sea. This is a detriment, as Simon seeks to establish the Fort Niles Island Natural History Museum to house and display the books and artifacts that he spends a lifetime collecting. His nickname Senator oddly derives from his knowledge of a wide variety of subjects, rather than for holding political office. It is used half-mockingly. People consider Simon eccentric but authoritative.