1830 Birth:2730 Birth date of 1830 and birth place of Prussia taken from 1870 U.S. census enumeration, where John was listed as age 40 and born in Prussia.

1870 U.S. Census:2730
Auglaize County, Ohio (Union Township; Post Office: Uniopolis)
Enumerated 26 July 1870
John Fritz •• 40, male, white, farmer, real estate value $200, personal property value $100, born in Prussia, father foreign born, mother foreign born, male citizen over age 21
Lucy •• 35, female, white, keeping house, born in Pennsylvania

1880 U.S. Census:2731
Hardin County, Ohio (Roundhead)
Enumeration date not given
John Fritz •• white, male, 68, married, farmer, unemployed 6 months, disabled by sun stroke, born in Prussia, father born in Prussia, mother born in Prussia
Lucy •• white, female, 50, wife, married, keeps house, cannot read or write, dittos for born in Prussia, father born in Prussia, mother born in Prussia [!]