Stillman Aldrich is in the 1900 Minnesota Census. The Census page is as follows:
1900 MN Rice County City of Faribault Supervisor 3, Enumeration District 148, Page 1
Stillman is written as "Stilman" and some numbers obscure part of the name but it can still be read as I have indicated. Stillman and Maria are indicated to have been married 31 years (really 30 yrs.) and to have three children living. The details on the child which you do not have is Jessie Maria Aldrich and she was born Mar 1883 in Iowa. She married Harry Thielbar and he is indicated to me a "Sr." meaning that they had at least one son by the name of Harry Theilbar Junior and may be other children. She died in 1917 and he died in 1928. Their bodies were shipped back to Rice County MN for burial. Each is indicated to have died in Pueblo, CO. I have not looked for them in the 1920 CO census yet.