Campbell's in North Dakota:

I am looking for any information on James A Campbell all I know is that they lived in Sargent County, North Dakota. he was born in June1881, and he married Amy Campbell (Robinson) . They had 4 children. James, Rebecca, Esther, and John, I know James father was born in Canada, I am pretty sure that his name was John M Campbell. All census records that i have found show that it was just him, and that he was widowed, His parents were born in Ireland. I need any information you can give me ,,,I've hit a brick wall. PLEASE Help...thank you.

Bonita Campbell