Yes, my information states they did come from Wales. I have Catherine's father as: Evan b. 1742 Prince George Parish. His father was James 1710. James father was John E. b.1680 in Wales. James father was Evan b. 1650 Wales. This is as far back as I go. Now in my notes I have that the name was changed from Prydderch to Prothro. I am moving at the moment but if I can be of more help contact me in about a week or 10 days and I will try to help more.