There's a transcribed marriage record for them at familysearch that gives the date as 4-Mar-1880.Groom's parents were Bra--RICHARDSON and Catherine VILES.Bride's parents were George ZORTMAN and Phoebe An HUS.
In 1880 they were in Louisville, Clay Co, IL
In 1900 they were in Lincoln, Monona Co, IA with children:Lafayette, 20, Thomas, 17, Grace A., 15, and Harlin, 11.The three oldest were born in IL and the youngest in IA.
There's an IA death record for William Franklin RICHARDSON d. 29-Dec-1924 in Lincoln, wife's name Samantha, parents not listed.
I can't find William's family in the 1870 census, but this is Samantha's in Oskaloosa, Clay Co, IL: ZORTMAN, Geo. age 44 b. PA Phoeba age 38 b. PA Mary A. age 16 b. OH Ellen age 15 b. OH Samantha age 13 b. OH William age 11 b. OH John age 9 b. OH Eliza age 7 b. OH George age 5 b. IL Harlan age 3 b. IL Margaret age 1 b. IL