Greetings! I've reached a roadblock and am hoping for some help!

My Grandfather is Harry Leon (Ruby Baack) Hutchinson, born in Delaware County, IA in 1917. He had 7 siblings: Darrel, Erma (Raymond Ostberg), Floyd (Ethel), Alfred (Garnette), Harvey (Mary), Orvilla (Jim Alstott), and Raymond (Elsie).

He told me his parents were Alfred William Hutchinson and Della Mae Cook. I can track Alfred through the 1880/1900/1910/1920 census rolls, but I find his wife listed a Maude A.

Alfred's WWI Draft registration in 1918 lists his nearest relative as Adella Hutchinson.

Is the name "Maude" related to "Adella" in any way? Are these the same people separated by a family nickname? Any information would be greatly appreciated!!