Osage was a Township in Labette County, not a town as far as I know. It is near Dennis, KS. The following is from the KS 1895 State Census for Labette County.
Name Age Sex Color Birthplace County City/Township Ward Vol. Sect. Page
Adey, B D 1 F W Kansas Labette Osage Township 189 4
Adey, C L 20 F W Kansas Labette Osage Township 189 4
Adey, E C 29 M W Indiana Labette Osage Township 189 4
Adey, Geo 10 M W Kansas Labette Osage Township 189 4
Adey, L A 3 F W Kansas Labette Osage Township 189 4