Could anyone help with bio information on the following husband & wife?

William Zinke b. 1863 Germany d. 1935 Walsh Cty
Rosina Zinke (Hickman) b. 1863 NY d. 1945 Grand Forks Cty

I understand they lived in Grafton, ND from at least 1920; previously living in Acton, ND and Warrenton, MN.

I would REALLY appreciate any help you could offer!!!

Thank you,
Rose
Minneapolis, MN