Thanks for your help - this is very much appreciated. I'm interested in knowing more about the children of Thomas Jr. Do you know if any of his children were a Richard Young Allen? Or do you have anyone by that name in your wider Allen information? He is the one I'm trying to locate. He was my great grandfather but I can't find the Allen family he came from. Richard Young Allen was born about 1851 somewhere in NC. That's not much to go on but I seem to be making progress - thanks to helpful people like you.
One thing I found interesting is your reference to Jemina Pearce Allen. My grandfather (Richard Young Allen's son) was Franklin Pearce Allen.