When Calvin Cross Lavalleur was born on 17 September 1888, in Cherokee, Iowa, United States, his father, Horace Greeley Lavalleur, was 29 and his mother, Helen B. Bridie, was 24. He married Ruth Scott Norton on 14 February 1914, in Cherokee, Iowa, United States. They were the parents of at least 1 son and 3 daughters. He lived in Montebello, Los Angeles, California, United States in 1930 and El Monte Judicial Township, Los Angeles, California, United States in 1940. He died on 19 October 1962, in Orange, California, United States, at the age of 74.