Thanks very much, Stewart and GUEST.# (Sorry to be so edgy, GUEST, if you'd been posting from an accredited account I would have been less so.
This Henry Parker was… well, in the immortal words of Dan Leno in his most famous soliloquy about his family, "Follow me closely, now, this is rather intricate" - Parker's grandfather was my great-grandmother's father (by his second marriage), and I've just found out about him.