Yes Rona I would say they do fit in with the others of Tonbridge & Horsmonden - the names fit well with other Twort lines - I also think Elizabeth Callow is the most likely candidate for Wm's wife - only problem is I can't find a suitable bapt for Wm T (for this particular line I'm missing a generation) - I don't think Wm was bapt Horsmonden (I would have noted it), so I would guess Tonbridge. Sorry I can't help any more than that for the moment - needs more research !.
Regards, Jeremy