Helen, I have many Brocks. My great grandmother was Margaret BROCK, daughter of Mosbey and Evaline Rhodes BROCK. She married to Morris E. (M E) BRITTIN. Their son, Roy V. married Tressie McComb Sprague. I believe her husband's name was Gedes Sprague. I have lots of Brock and Brittin info to share, not much on Sprague. Hope this connects to yours. Vauna