Len, thank you for your message. I have a list in my great-grandfather's hand of his and his siblings names and dates of birth. It was always known in the family that Wm and Jane were his parents and checking then 1881 and 1891 census confirms the parentage of his siblings. He had a brother Wm born 1871. I know very little about the Hamptons apart from the fact that Jane came from a smallholding in German, and her mother came from a coastal farm on the Peel, Kirk Michael Road. I also know that my great-aunt Christian married a cousin, Robert Charles Hampton. The dates tie in age wise for the Wm you have found, and it may be that there is a connection. Any further help much appreciated.