Here is Eli Bowen in 1880 Census:
Census Place: Reading, Hillsdale, Michigan
Roll 581, p. 271D

Eli BOWEN, Self, 37, OH, Occ: Showman, Fa: NJ, Mo: PA
Martha N. BOWEN, Wife, 31, OH, Occ: Keeping House
Frank BOWEN, Son, 10, OH, Occ: At School
Robert BOWEN, Son, 4, OH, Occ: At Home
Adrian BOWEN, Dau, 1, MI, Occ:At Home

By ages of children of photo and no daughter I would guess photo was taken maybe around 1890ish. Oldest boy looks to be around 14-16 years old. Just guessing.

1870 Census Ohio, BUTLER TWP, RICHLAND, Roll: 1261 Page: 19
Sarah Bowen, 64, F, Keeping House, $2000, $200, Penn.
Eli Bowen, 23, M, Travels with Circus [hard to read 3rd word], $1600, $1300, Ohio
Two others in home one servant other farm laborer.
No other Bowen listings in Richland County, Ohio

Would suggest checking 1850 Census to find him & parents.