I hadn't done any research on Pricers that far back until now, because it's the Reynolds that I'm related to, but -- here's what I found.
On the 1860 census in Ross Co, Ohio:
Daniel Pricer 45 Ohio William H. 20 Ohio James H. 17 Ohio Caroline 15 Ohio Nancy 13 Ohio Louiza 11 Ohio
On the OHGenWeb site for Ross Co, Ohio in a database for Marriages up to 1850:
Pricer, Daniel Stinson, Nancy Jun 2, 1836
On the 1850 census in Ross Co, Ohio:
Daniel Prizer 34 Farmer Ohio Nancy 37 Pennsylvania Sarah E. 13 Ohio Martha J. 11 Ohio William 10 Ohio James H. 8 Ohio Mary C. 6 Ohio Nancy 3 Ohio Lucinda 5/12 Ohio
In 1870, Caroline would have been 25 or 26.
The Caroline married to Joseph Black on the 1870 Vermilion County census is 22.
I think I still have some Vermilion County marriage records on indefinite at the Family History Center.I could try to find some time in a few weeks (I'll be out of town next week) to look through them again and see if I can find the marriage for Joseph and Caroline.
In 1880, Mary C. 35 is remarried and found on the census in Butler Co, Kansas, with husband John Jack 53 born in Scotland, son Robert 3/12 born Feb in Kansas, and daughter Cora Black 10 born in Illinois.
I'm not convinced the surname is Jack because it is kind of unclear, but Heritage Quest has it indexed as Jack.