Eileen,
Thanks for checking on the Hoggs of Uxbridge Township. I don't think my William Hogg is connected, but since I do not known his parent's names i cannot say for sure. I also do not know if William had any siblings. I do know that William's parents came from Scotland, but I do not know when. Did the original Robert Hogg come from Scotland? None of William's seven children had the name Robert, which leads to also think he is not related. I am going to try the church records you mentioned to see if William comes up.