Shirley, I been checking on Elizabeth Yeast Justice. Since Andrew Jackson Justice is from Addison twp., Summerset, PA. I beleive they were married in that county or neighboring Fayette county. According to the History of McDonough Coundy, Illinois for Sciota Township there was a John L. Yeast son of Adam Yeast and Susan Morley. John was born in Fayette Co, PA. and saying that the Yeast were natives of Maryland. It is my belief that this Adam was her father as well. There was a Margaret Alcinda Yeast born in Uniontown, Fayette Co. PA. on Nov. 3 1857. She married Henry Walker in McDonough Co. Illinois. I don't have the imformation in front of me but I belive their kids moved to Saline Co. Neb. Elizabeth Yeast Justice named one of her daughters Margaret Alcinda. There are a lot lose ends. But it looks the Yeast family started with George Peter Jost who was from Palatine in Germany and settled in Frederick Co., MD.