Here is the log entry for the death of Mari and Ole Sr from Lutheran Calvary Church located in Lee County, 19 Perry Road.
Mari (which I have also seen as Marie, Maren and Mary) died on November 1, 1905 in Rochelle, Illinois. She was 81 years, 3 months and 20 days at the time of her death, which would place her birth as July 12, 1824. Her maiden name was Iversdath Skaar, and I believe Skaar was the name of the farm from which her parents lived at the time of her birth.
Ole Sr died on November 22, 1906, also in Rochelle, Illinois. He was 92 years, 9 months and 8 days at the time of his death, which would place his birth as February 14, 1814. Ole was born to an Olson. Unfortunately I have not been able to track down his father and mother.
Both Ole Sr and Mari were buried at the Calvary Lutheran Church in Lee County, Illinois.