Assuming he's the same man, married to Priscilla Rescoria found on familysearch.org with son Marion Jr, then in 1900, he was enumerated as Marion E. Bonham with wife Priscilla in Goldfield, Teller co., Colorado, born March 1873 in Ohio (she was born May 1878 in PA); they had a son Louis b 1899 CO. Marion Sr was a gold miner.
I can't find them in 1910 or 1920, but see children's birth places, below.
In 1930, Marion and Priscilla are in Bisbee, Arizona living next door (or in same house?) to L. Leonard Bonham, b abt 1900, with wife Cora and several children. Enumerated with Marion (58) and Priscilla (51) are: William (23 b Washington), Lillian (20, b Idaho), and Marion Jr. (17, b Arizona) (!!)
Marion Sr. is a miner in the Bisbee copper mines. (I've been there-- huge hole in the ground...) He was born in Ohio, of a Virginia father and Ohio mother.