Another Sylvia is the woman Mr Scott is mentioned as dating in The Yellow Sign. Given that this would be set some fifty years later, it seems unlikely it can be the same woman, although she could be a granddaughter, perhaps? Alternatively, given that this Mr Scott is likely the same person as artist Jack Scott, it is possible that he is the identity of Jack Trent in an alternate or fictional timeline, making the two Sylvia's identical, despite the apparent dating contradiction.
Other Sylvias in the Mythos Edit
Characters named Sylvia appear in: