Maude's maiden name is Chamberlain. Her parents were Celest Cyprus or Cyphers Chamberlain and Laura Ann Hilton. She was born in 1888 in Plum Creek (now Lexington), Dawson County, Nebraska. I have ancestry for both her parents, one line even going back to the Mayflower. I don't have a lot of information about Adair, however. I do remember him from when I was a child. He came to visit my grandmother who was his aunt, and my family went riding through the mountains of Colorado with him. The visit stands out in my mind because that is the only time in my memory that my dad rode in a car with someone else driving until he was very old.
Please contact me at firstname.lastname@example.org
and I'll answer whatever questions you have. I'm guessing you descend from Adair, so that would make us second cousins probably. I'll look forward to hearing from you.