I'm now noticing how old this post is.
In case you still need it, here's more from Minnesota Official Marriage System (MOMS):
Hokan Harold Hokanson (died 1972)
married 24 March 1925 in Roseau County, Minnesota
Mary Rose O'Donnell (died 1990)
They had at least two children (per link below and per Minnesota Birth Index at Minnesota Historical Society) who are likely living.
Hokan Hokanson died 21 July 1972 in Baudette, Lake of the Woods, Minnesota. (Ah - So now I see why you posted in the Lake of the Woods message board.)
Below are two links to Ancestry message board discussions of this family. Both queries were posted by a cousin from Sweden.
A recap of Swan and Magda CHILDREN with names and DOB as found in the census with marriage info added:
Ingborge born about 1898 Sweden (Brita/Bertha m John McAnnany)
Martin born about 1900 Sweden
Hokan born about 1903 Sweden (m. Mary Rose O'Donnell)
Anna /Emma born abt 1908 Minnesota (Annabelle m James List)
Elmer Hokanson born about 1912 Minnesota (m Audrey Stein)
Alvin Hokanson born about 1915 Minnesota (m Rhoda Mae Heurd)
For more see: Minnesota Official Marriage System (MOMS) online; Minnesota Historical Society (Births, Deaths, MN state census); Ancestry; and Family Search.
So that's a start at finding out about H. Hokanson. :D