Born in
Hamilton, Ontario, Gordon was the youngest daughter of Sarah Louise Crompton and James Harvey Mattice. The family lived on Catharine street in central Hamilton and encouraged their children to paint and draw. While still in public school, Gordon attended Saturday morning art classes at the Hamilton Art School and received a scholarship for her efforts. She spent a large portion of her childhood creating art in the shadow of her elder sister Marion Mattice (1878–1956). Although there was a large age difference between the two, the girls were known to be in fierce competition with each other and would often not get along. After her father's retirement in 1903, Gordon chose to leave Hamilton to live with relatives on a 200-acre fruit farm near
Chatham, Ontario. It was here where she began to study and paint
china with her cousins. Realizing this was a marketable skill, she decided to rent a studio to sell her unique china pieces and teach art to locals. She held her first exhibition of china from December 14–16, 1908, at the Hotel Sanita (presently the Chatham Cultural Centre). For a number of years Gordon worked as a teacher at the Hamilton Technical School, and was known to aggressively seek out exhibition opportunities. She was well regarded not only for her china works but also a steadily growing portfolio of Canadian
landscape paintings. In 1916, Hortense's father died in Hamilton. When she returned for the funeral, she was approached by John Gordon, who suggested she consider teaching at the Hamilton Art School. She joined the staff in October 1918 and after being courted by Gordon for a number of years, the two were married on 3 August 1920. The married couple often traveled to Europe in the summers, where Gordon was inspired by the
Barbizon School and other European masters. Her landscape works developed an increasingly soft, loose paint handling style and a sense of spontaneity. == Later life and the Painters Eleven ==