Major-General Guy Carleton Jones was born on December 28, 1864, in Halifax, Nova Scotia.

He was the 4th Canadian Surgeon General. He was educated at the Halifax Medical College and King’s College London. He began his military career in 1896 when he joined the Canadian Militia as Surgeon-Lieutenant in the 1st Halifax Regiment, Canadian Artillery. In 1898, he was transferred to command the first bearer company formed in Canada. During the Boer War, Jones served as second-in-command of the 10th Canadian Field Hospital; and afterwards he became Principal Medical Officer for the Maritime Provinces in the Permanent Force. In 1906, he was appointed the head of the Canadian Army Medical Corps (CAMC) as Director General Medical Services (DGMS) and was reappointed to a second term in 1911. At the beginning of World War I, while still serving as DGMS, Jones was sent overseas as the Assistant Director of Medical Services. When Canada sent a second division, Jones was appointed Director of Medical Services (Canadians) in February 1915, overseeing medical matters for the Canadian overseas forces from headquarters in London, England. Major-General Jones retired from the CAMC in 1920 and left Canada. He was detained by enemy forces in 1941 in Italy, where he had retired with his second wife. He was an honorary Fellow of the American College of Surgeons.

In 1889, he married Susan Morrow (1865–1926), and in 1928, he remarried Ginevra Pia Bianca Maria (1891–1942). He died on October 23, 1950, in Edinburgh, Scotland.