Hi Cardiff, thanks for putting me right about all the information, and going to all that trouble. You have the correct family.
Hi jwls, I am quite excited to read that I may have found someone who is researching the same family as me. Thomas Whitney was born 4th October, 1818. There seems to be some discrepancy with the dates, but I feel this is the right one, as I found his grave at Ramoth Baptist Chapel, Cowbridge, and he died 29th April, 1890, which would make the 1818 birth correct. He was born in Wolvesnewton, Monmouthshire and his parents were David Whitney (Witney) & Mary (nee Prichard). They married 26th December, 1812 in Wolvesnewton. Hope that this is enough information for you to know if it is the same family, if not I can send you more.
Hope to hear from you soon,
Kind Regards Di