On the Union County website I found marriages - work in progress but the A Grooms were finished:
John M Allinder and Sarah Boroughs Dec. 31, 1868
Book E page 273
I also found in the 1860 census Sarah R. Boroughs b. 1849 PA
and John Allender b. 1849 IN
Both were living with their families.
I haven't yet found the two after their marriage on the 1870 census.