I didn't find your Grandfather's obit, but I have found your Grandmother's obit:
"Grand Forks Herald (ND)
September 17, 1990
Rose Hokanson, 88, Warroad, died Friday, Sept. 14, 1990, in Warroad Care Center, Warroad.
Services will be at 11 a.m. Tuesday in St. Mary's Catholic Church, Warroad. Visitation will be from 7 to 9 p.m. today, with a 7:30 p.m. prayer service, in Helgeson Funeral Home, Warroad.
Rose Mary O'Donnell was born Sept. 8, 1902, in Little Falls, Minn., the daughter of Sophia and J.R. O'Donnell. She lived in Little Falls until 1912 when she moved to the Warroad area. After she married Hokan Hokanson March 24, 1924, they lived in Bemidji, Austin, and International Falls, Minn., before they returned to the Warroad area. She taught school in Carp and Baudette, Minn.
Survivors are her daughters, Joan Tveit, Warroad, Donna (Mrs. Donald) Seitz, Purvis, Miss.; son, Don, Moorhead; 18 grandchildren; 24 great-grandchildren; a great-great-granddaughter; and sisters, Grace Comstock, Warroad, and Edna Yost, Seattle.
She was preceded in death by her husband, three brothers, and five sisters."
I have found 17 of the 18 grandchildren and the 24 great grandchildren (I hope I got it right)
Then there are of course all the great great grandchildren I don't know about. So I have not found all of Hokan's descendants and will need some help to complete this branch of our family tree.
Your mother is my third cousin:
Olof Funseth->Jacke Funseth->Jakob Funseth->Arne Funseth->Barbro Funseth
Olof Funseth->Brita Funseth->Magdalena Hokanson->Hokan Hokanson->Donna Seitz
If you want to know more about family history I have information to share, also have old photos.
You can find me on Facebook.