Is Clara his wife? There are two different men, with varying birth years with a spouse Clara in this timeframe in Montgomery area. One is listed on census data as Black, the other is listed as White.
see: https://familysearch.org/search/record/results?count=20&query=%2Bgivenname%3A%22zadoc%20jadoe%22~%20%2Bsurname%3Arickets~%20%2Bbirth_place%3AMD~%20%2Bbirth_year%3A1862-1875~%20%2Bspouse_givenname%3Aclara~