When Suzana Thistlethwaite was born on 6 June 1869, in Ontario, Canada, her father, Robert Thistlethwaite, was 39 and her mother, Jane Mode, was 36. She married Martin Sylvester on 23 March 1910, in Vankleek Hill, Champlain, Prescott and Russell, Ontario, Canada. She lived in Prescott, Leeds and Grenville, Ontario, Canada in 1901 and Saskatchewan, Canada in 1916. She died in 1959, at the age of 90.