Charles S. Oldson is the son of Nils Oldson and Matilda (Swanson) Oldson. Charles was born 9 June 1884 in Pennsylvania and died 3 September 1909 in Eagle Grove, Wright, Iowa. He and Lucy Eliza Peach were married on 2 May 1906 in Eagle Grove. Isabel was born in 1906 or 1907 as she is 3 years old in the 1910 census. Nils Oldson was born14 December 1855 and died 18 Nov 1937 in Eagle Grove; Matilda Oldson was born29 September 1860 and died 15 January 1936 in Eagle Grove.