Here is the grave marker for Ole and Mari Finnestad's great granddaughter, Lena Verdelle (Vallem) Dover.
The marker indicates "Doner" but according to Winnebago County, Illinois marriage records, Lena's husband was Francis William Dover. I haven't found additional records to verify which spelling is correct.
Lena was born July 30, 1907 in Lee County, Illinois and died January 3, 1955 in Phoenix, Arizona. She is buried at the Union Cemetery in Lee County, Illinois.
Lena was the daughter of Lena Josephine (Travland) and Peter Vallem, the granddaughter of Rachel (Finnestad) and Lewis Vallem.