When Arthur Byron Pettingill was born on 23 January 1881, in Waltham, Middlesex, Massachusetts, United States, his father, Calvin Peck Pettengill, was 27 and his mother, Ella Kendall, was 28. He married Ernestine Muscheites on 12 September 1912, in Denver, Colorado, United States. They were the parents of at least 2 daughters. He lived in Boulder, Boulder, Colorado, United States for about 30 years and San Antonio Judicial Township, Los Angeles, California, United States in 1940. He died on 25 May 1963, in Los Angeles, Los Angeles, California, United States, at the age of 82.