I've done a little research and believe that John & Sarah Phillips Wagner may be the family of John & Rachel. Below is why they may belong together.
1870 census records Auglaize co., Clay twp.
Wagner John 23farmer Ohio Sarah 22Ohio Phillips Benjamin49 Oh (father of Sarah?) next door Wagner Rachel63 Ohio Brentlinger Phillip 31 Ohio Rachel31 Ohio Joseph5Ohio Purcell? George W.11Oh (question marks means I'm unsure of the spelling)
1880 Auglaize Co., Clay Twp. Brentlinger Philip40 Ohio Ohio Ohio Rachael 41 wife broken ankleOhio Pa Pa Joseph L.15 Ohio Ohio Ohio James J.10 Ohio Ohio Ohio Rachael C.dau 6 Ohio Ohio Ohio Persell George21 step son Ohio Ohio Ohio Waggoner Rachel 69 mother-in-law Ohio Pa Pa next door Waggoner John33 Ohio Pa Ohio Sarah32Ohio Virg. Ohio Reuben L.8 Ohio Ohio Ohio Rosetta D. 6Ohio Ohio Ohio John Henry4 Ohio Ohio Ohio
No Abraham. Do you know if this could be the Rachel that you are looking for? John would have died before 1870 so that could have been the correct John in the Probate records.