I am researching Almira Jane Gross born in 1859, Madison County, Oh and died in 1934, Madison County, OH.She was the daughter of Benjamin D. Gross and Lucretia Keen (also have seen as Kern and Cain).
It is likely she is the sister of your Judson as the 1860 Census for Somers, Preble Co., Oh shows Benj Gross 39, Lucretia Gross 31, Susan 9, Mary 7, Judson 5, and Almira 2.Her obituary states that she "was born and raised in the vicinity of Gillivan, and spent practically her entire liftime here (Gillivan, Madison County, OH)."
Almira married Colmore Ellsworth McCoy on December 12, 1878, in Madison County, OH.They had 8 children:Martha Lucretia, Howard, Della, Myrtle, Mary, Colmore, Edna and Samuel.
As for Benjamin and Lcuretia Gross, here is what I know.
1850 Census:Jefferson Twp., Madison County, OH.
Benjamin D. 25 born in NY, Lucretia 21 born in Ohio.
1860 Census:Somers Twp., Preble Co., OH.
Benj. 39 born in NY, Lucretia 31 born in O., Susan 9, Mary 7, Judson 5, and Almira 2.
**names and place of birth correct, but why change of location and age differences?
1870 Census:Jefferson Twp., Madison County, OH.
Benjamin 52, Lucretia 44, Susan 19, Elizabeth (Mary?) 16, Judson 14, Jane (Almira?) 9, Samuel 8, Daniel 5.