Born: August 7, 1859, Charlton (then part of Kent), England.
Died: June 1, 1935, London, England.
Buried: Brookwood Cemetery, Brookwood, Woking, Surrey, England.

Harold was the son of Sir Samuel Bagster Boulton, 1st Baronet, and Sophia Louisa Cooper. He married twice, to Adelaide Lucy Davidson (1889) and Margaret Cunningham Lyons (December 29, 1926).
He was the 2nd Baronet, Commander of the Royal Victorian Order, Commander of the Most Excellent Order of the British Empire, Knight of Justice of the order of St. John of Jerusalem, Justice of the peace, Master of Arts of Balliol College Oxford, Director of the Royal Academy of Music of Copped Hall, Camberley and Inch Kenneth, Argyll.
He was known as both a philanthropist and poet. He became interested in Scottish folk songs as an undergraduate at Oxford.
He is perhaps best remembered as author of the lyrics to the Skye Boat Song. It tells of the journey of Prince Charles Edward Stuart (Bonnie Prince Charlie) from Benbecula to the Isle of Skye as he evaded capture after his defeat in the 1746 Battle of Culloden.