When Josephine Lavallee was born on 31 May 1868, in Minnesota, United States, her father, Jean John Sylvestre Lavallée, was 26 and her mother, Julia Tarte, was 18. She married Jean Baptiste Boisvert on 25 October 1886, in Washington, Minnesota, United States. They were the parents of at least 9 sons and 3 daughters. She lived in Oneka Township, Washington, Minnesota, United States for about 5 years and Edmonton, Alberta, Canada for about 5 years. She died on 6 May 1953, in St. Paul County No. 19, Alberta, Canada, at the age of 84, and was buried in Legal, Sturgeon County, Alberta, Canada.