Dr. William Robert Montgomery Pentland was born on the 17th of October, 1842, in Oshawa, Ontario. He was the 6th of 9 children born to Rev. John Pentland and his wife the former Frances Jane Montgomery. His father was an Anglican Minister who was born in Ireland. His mother was born in Jamaica. His siblings included, George, John, Victoria, Janette, Georgana, Alfred, Fanny and Charles. (William was the first child born in Canada.)
Dr. Pentland graduated M.B. from The University of Toronto Faculty of Medicine in 1865. According to the 1882 Ontario Medical Register, Dr. Pentland joined the College of Physicians and Surgeons on the 6th of June, 1866. When he was 27 years old, he was a practicing physician in Elora, Ontario. He married Helen Cairncross on the 15th of July, 1870. She was born on the 1st of June, 1835 in the Orkney Islands, (off the northern coast of Scotland), the daughter of James Cairncross and the former Hannah Hedley Mackay. Their son John Pentland was born on the 5th of October, 1871 and their daughter Hedley Mackay Pentland was born on the 6th of February, 1874. Both children were born in Elora.
By 1876, Dr. and Mrs. Pentland were living in Chatham, Ontario. In the 1876-77 the Chatham City Directory, Dr. Pentland’s office was located at 84 King St. West and his home was located on King Street near Second Street. It also records that Dr. Pentland was the Secretary of the Chatham Bible Society and the President of the Young Mens Christian Association (Y.M.C.A.) which had been organized in 1875.
The Pentland family moved to Burford Twp, Ontario prior to 1896.
Mrs. Pentland died on the 22nd of September, 1907. According to the 1922 Ontario Medical Register, Dr. Pentland resided in Flatts, Bermuda. Dr. Pentland died on the 26th of January, 1926. Dr. and Mrs. Pentland are buried at Mount View Cemetery, 80 Blenheim Road, in Cambridge, (formerly Galt) Ontario.
*Their son, John Pentland served during World War I. After his discharge he became a druggist. John died on the 1st of June, 1936 and he was also buried at Mount View Cemetery.