When John P. Simons was born on 16 August 1874, in Fond du Lac, Fond du Lac, Wisconsin, United States, his father, Johann Peter Simons, was 26 and his mother, Anna Maria Wirtz, was 20. He married Louisa Marie Berend on 24 January 1899, in Windthorst, Archer, Texas, United States. They were the parents of at least 5 sons and 7 daughters. He lived in Clay, Texas, United States in 1935 and Justice Precinct 1, Wichita, Texas, United States in 1940. He died on 8 September 1962, in Umbarger, Randall, Texas, United States, at the age of 88, and was buried in Saint Mary's Cemetery, Umbarger, Randall, Texas, United States.