Looking for information on John E. Yingst born March 1869 in PA. Married Alice J. Dunlap. I find John E. Yingst with wife Alice, child Stella M. born 1897( her name may be Estella Madge) and brother in law Harry R.Dunlap age 27. This information from the 1900 Census of Braddock Ward 1, Allegheny Co., PA. In the 1920 & 1930 Census they are living in Tarentum, Allegheny Co., PA. John is working in the steel mill. Estella Madge will marry Charles Edward Cooper and live in Tarentum, Allegheny Co., PA. They had two sons: Glenn Edward Cooper and Albert L. Cooper. Appreciate a reply.