Thank you for your valued input.

Oaklawn Cemetery Ledger
1903 - 1966
'M' Surnames

Matthews, Rebecca, 75y 3m 27d, blank, blank, Hyptatic Pneumonia, blank, 21, 828, blank, blank, blank, Ward 4 WW, blank, Dec 17, 1922, 333, Dec 19, 1922, blank, 24, blank

The old ledger said she was 25y 3m 27d on her death this was probley a transcription error to the web site. for the cemetery survey says she was born in 1847 makeing her 75 years old. It does give the correct day of death 17 Dec 1922 she was buried on the 19 Dec 1922. Cause of death was Hyptatic Pneumonia. she died in ward 4 Wynnewood hospital, Wynnewood, Garvin county, Oklahoma.
I agree that you would expect Rebecca to be buried in Texas, perhaps with her husband, in McBride Cemetery,Quinlan, Hunt Co., Trxas.
One of the American relatives, whose grand parents had known Rebecca, mentioned that they thought she had been buried in Wynnewood, but no reason why.
As you state, there are numerous errors in all family trees.
I am not sure that Rebecca's father was John Bagnall. That is why I hoped it may state it on her death certificate. I have the marriage certificate, which shows Rebecca's father as Daniel Bagnall. Where else do you think I can find Rebecca's parents names. Cannot find a birth certificate, for Rebecca.