Robert Wade immigrated in 1639, too late to have a profile in Robert Charles Anderson's Great Migration volumes. But Anderson does include Robert Wade in The Great Migration Directory, Immigrants to New England 1620-1640. On page 353 the listing for Robert Wade indicates that his origin is Unknown, which means that Anderson has been unable to document his parents. Here is the full entry for Robert Wade:
Wade, Robert: Unknown; 1639; Harford, Saybrook [HaTR24; HaBOP 157; CCCR 1:46, 301, 2:523; TAG 35:22].