I am looking for information on my grandfather George C. Mack who was born in Wisconsin March 14, 1869. His parents were Calvin Church Mack and Emeline Hoisington. He married twice and had three children by each wife. They were all born in Oklahoma and are found in the 1910 & 1920 census for Pawnee county--Pawnee township. George's second wife was Rebecca Elizabeth Knight who he married in Oklahoma in 1906 or 1907. The name of the first wife is unknown. Any information would be greatly appreciated!