I am not sure if the Isaac Hagerman is the same in my line or not, but here is what I have.Jacob father was Isacc Hagerman b. unknown, and married to unknown. Isaac Hagerman Children were: Catherine,Isaac,Jacob(1822-?),Mary (Polly ).Elizabeth (Betsy), Sarah, and Bettie.
Jacob married Eliza Falkner in 1851 in PA. His son Adam was my great grand father,his son Elmer is my grandfather. I am the daughter of Elmer's youngest daughter.