Family of David Pritchard Mrs Pritchard

DAVID PRITCHARD was born around 1854. Unknown parents. Unknown birth place. In 1905, aged about 51, he was a Coal miner (source 1). Unknown time of death and place.

MRS. PRITCHARD Unknown time of birth and place. Unknown parents. Unknown time of death and place.

It's unknown when David Pritchard married Mrs. Pritchard. If family story is correct they had several children, but don't have a lot of information on this. But they had at least one son:
Thomas Pritchard about 1879
They might also had a son called:
David Pritchard in 1881

Notes:
It's beleived that both Mr. and Mrs. David Pritchard died young, leaving their children behind. They owned a lot of land, and after their death family came in to help raising the children and maintain the land. Somehow this land ended up on the family hands instead of the children. I believe the land was somewhere near the Black Mountain, Wales, UK. It might have been David's father who owned the land mentioned, since David is listed as a coal miner on his son's Thomas wedding certificate.

Help wanted:
I want to find out more about this family and what happened to them all. Names, dates, places - anything really. If you have any information, please contact me.

Please note that information in this post might be inaccurate.

Sources:
1) "Certified copy of marriage Thomas Pritchard and Margaret Bowen"