When John Burns Gaylor was born on 14 September 1864, in Princeton, Mercer, New Jersey, United States, his father, Sidney A Gaylor, was 20 and his mother, Harriet Kitchell, was 20. He married Lumina C Trout on 15 October 1890, in Octavia, Butler, Nebraska, United States. They were the parents of at least 3 daughters. He lived in Election District 13, Sheridan, Wyoming, United States in 1920 and Thermopolis, Hot Springs, Wyoming, United States in 1930. He died on 1 December 1951, at the age of 87, and was buried in Thermopolis, Hot Springs, Wyoming, United States.