It's helpful to others if you post dates and places with your queries. I'm not from this Comp family, but I'm interested in where this Daniel might be from in PA. My Comp line was from Cumberland/Perry Co. I did some looking on my own and did find Daniel & family in Linn Co. Iowa in the 1860, 1870 and 1880 census. I sure haven't been able to locate him in PA in 1850 though and I'm sure you didn't find him either.

Do you know if the William M. Drumbarger and wife Mary Middleton, who also settled in Linn Co. IA was related to Margaret Jane? It's such an unusual name that I think he must be a relative. I found out how difficult it is to find anything on Drumbarger/Drumberger in PA. Did you know there is a William Drumbarger who during the Civil War was in Company G, 202nd Pennsylvania Infantry? I'm wondering if this could be the same William who came to Linn Co. IA. I have a little more on when he enlisted and where the regiment was organized, if you don't have it.