More Information:
Found a brief note in my Grandfather's handwriting that says Thomas' mother's maiden name was possibly "Tneale". This may indicate that Isabella Camaish is on the right track (her mother's name possibly Kneale, and she married a Kneale). The note goes on to say that Thomas' father died young (possibly supporting either the 1813 or 1814 wills), and that his wife remarried, possibly (underlined three times) "Mills" family.