hello, have you received any responses? I am Hyram’s daughter, Kim, and do not have all of the research my father did concerning Sidney. I am thinking that Sidney came from Scotland, however we can check through what Dad had done and see. It will take a while, and my brother Lit might have better access to this. Best wishes in your search – Larkin was a familiar name. If it’s OK to ask, who was your father and mother? Kim