This Birthdate says Minerva was born after Jacob was age 70.

I found the following IGI transcription but have no idea if it’s the correct Minerva.
Marriage: Addison D. ELROD, 26 Mar 1881, Monroe', 'Ohio. Batch number: M514041
She would have been 44?

Indiana Index to Marriage Records of Delaware County 1827-1920 Inclusive Volume I Letters A to K Inclusive 1 of 2, 2 of 2
Cox Eli m. Minerva Ollom, Apr 4 1872, Book C8 - page 11
Klaus Henry T m. Lillien Ollom, May 27 1888, Book C9 - page 53
Hale John T m. Mary Elizabeth Ollom, Dec 25 1851, Book C2 - page 40
Thornburg Mary m. John Ollom, Nov 19 1840. Book C1 - page 07
White John O m. Carrie E Ollom, Apr 22 1872 Book C-6 - page 16
plus a few others