I have just discovered this thread, and am puzzled about Ann, the natural daughter of Thomas PORTAS, wife of Andrew LOCKING. The only Ann, wife of Andrew in my LOCKING One Name Study was indeed illegitimate, but I have her as Ann SANDS, who married Andrew Locking in 1803. Did the Will of Thomas TYSON mention where his sister was living? Also, my Ann died "aged 72" in 1840, which would give her a birthdate of 1768 - a bit early to be the daughter of Thomas!
Any further clues gratefully received.
Cheers,
Liz