You say you can't see "William and Mary's childrens christenings on the Ancestry Richmond PRs, other than Williams in 1808. I can see the previous generations, his own christening and those of apparent siblings.". Whose siblings are you talking about?
I have found on Ancestry baptisms for William, Hannah, Thomas, Mary Ann, John, Charles, Edward and Henry (I don't think there was a George in the family so am discounting him) all at St Mary Magdalenes in Richmond, all with dates etc.
I also have a photo of my William along with dates listed on it handed down through the family as well as photos of his and Mary's graves, also with dates, and those of my William's parents, William and Hannah.
My William died on 17 August 1872 and was buried on 20 August 1872 at St John the Baptist Church, Old Malden, Kingston, Surrey.
I live in Australia and whilst I have visited these graves, I sometimes get places and distances rather mixed up. However I thought my Mary was the Mary Browning in the marriage certificate because the 1851 Census says she was born at Stafford and the 1861 Census states that she was born at Abbots Bromley, Staffordshire, England.The marriage bans says she is from St George Bloomsbury - where is that?
I do have a copy will of William but am having trouble deciphering it. I found it in the England and Wales Prerogative Court of Canterbury Wills 1384-1858.
I'm still confused.
Jilly