I am researching Abraham's brother Charles Frayer.I also have some info on Abraham. I have the same children as you have for him and his wife Sarah. However, I have Ida as being born in Pa about 1862.The 1870 PA Census also have additional family members listed: E G(female) born 1854, Arabella born 1856, and a girl whose name wasn't very legible born 1869. None of these show up in 1880 Census. Also Samuel in 1880 seems to be Henry in 1870. The 1850 Census shows a James (or possibly John) Frayer of Sharpesburg Boro, Allegheny Co, Pa as the father of Abraham and Charles. I have some more on the family if you are interested.