Miller was the photographer. He was at the Minneapolis address from 1884 to 1889. The lady wears a bustle so I will guess that the photo was taken sometime 1884 to 1886.
G.Gpa Pryor & second wife Melie
Update from Iggy:
This appears to be Carrie (Marshall Swanson's wife) father.
William M Pryor
Birth 23 Apr 1836 in Monroe, Ohio, United States
Death 22 Jun 1918 in Champlin, Hennepin, Minnesota
This photo is in Ancestry.com
William appears to have had three wives. - I think this is:
Birth Jun 1853 in Ohio, United States
Death 16 Feb 1922 in Washington county, Ohio, United States
This photo went Full Circle 143 on April 1 2016