Glanmore was built in 1882 – 1883 for wealthy banker John Philpot Curran Phillips and wife, artist and homemaker, Harriet Dougall Phillips.
John P.C. Phillips (b. 1842, d. 1912) was born in London, Ontario. Throughout his career he worked with many banks and loan companies. For several years he was the manager of the Hastings Loan and Investment Bank. In 1907, Phillips established and became the manager of the local branch of the United Empire Bank of Canada.
Harriet Dougall (b. 1839, d. 1915) was a descendant of the Meyers and Bleecker families, who were well known United Empire Loyalist families in the Belleville area. She inherited part of the Bleecker property (on which Glanmore was later built) from her grandmother. Harriet was a talented artist who created portraits and paintings of romantic figures; some of which remain on display at Glanmore.
John P.C. Phillips and Harriet Dougall were married in 1863. They had one son, Percy, born in 1864. Percy died in Kingston at the age of 3 in 1868. When John and Harriet Phillips first lived at Glanmore in the 1880s, they were a middle-aged couple with no surviving children.
In 1896, fourteen-year-old Jessie Patterson (b. 1882, d. 1932) came to live at Glanmore. Jessie was the daughter of James Patterson, a local labourer. Mr. and Mrs. Phillips did not formally adopt Jessie, but treated her as if she was their child, and she assumed their surname. Jessie attended school at the Convent of the Holy Name in Hochelaga, Quebec for six years. Upon her return to Glanmore she had a lively social life. Jessie went on to marry Belleville businessman Sanford Rattray Burrows and inherit Glanmore from Harriet Phillips.