Percy Max Tonkin Roberts was born on 16 June 1891 in Murray Harbour, Prince Edward Island. He is the son of Josiah Roberts and Maggie Henry. Percy married Lillie Maude Finley on 28 January 1914 in Arlington, Middlesex, Massachusetts. Lillie was born on 18 February 1889 in Murray Harbour, Prince Edward Island, and is the daughter of John T Finley and Susanna J Jenkins. Max died on 10 August 1940. Lillie died on 8 February 1920. They are buried in Mount Pleasant Cemetery, Arlington, Middlesex, Massachusetts.

Max Murray Roberts was born on 18 December 1914 in Marengo, Saskatchewan. He is the son of Percy Roberts and Lillie Finley. Max married Barbara Bonney Bond on 6 August 1942 in Arlington, Middlesex, Massachusettts. Barbara was born on 8 October 1920 in Needham, Norfolk County, Massachusetts, and is the daughter of George W Bond and Clara Bonney. Max died on 14 November 2008. Barbara died on 7 March 2009. They are buried in Westview Cemetery, Lexington, Middlesex County, Massachusetts.

Phyllis Roberts was born on 22 March 1916 in Arlington, Middlesex County, Massachusetts. She is the daughter of Percy Roberts and Lillie Finley. Phyllis died on 28 December 2015 in Bedford, Massachusetts. She is buried in Mount Pleasant Cemetery, Arlington, Middlesex, Massachusetts.