Hi, my name is Hugh Wallace, live in Watervliet, NY, Through the Wallace/Wallis FTDNA project, I have been connected to two or three other peeople who like you are connected to the Wallace/McCullough family, Mine is Scot ancestry and theirs is Irish,theirs matching the James Wallace, b. 1717 in Tyrone, moving to and living until his death in Abbeville So. Carolina,and the Joshua you note. I exchange info with them, we are trying to figure out just when we had the common parent,they have info beyond what you have written and probably would like to share, if and when you receive this please use my email to communicate, it is Hwallace@nycap.rr.com