He was created a Baronet in 1907 and in 1917 he was raised to the peerage as Baron Forteviot, of Dupplin in the County of Perth.

In 1912 he chaired the Dewar Commission, an examination of the state of healthcare provision in the Highlands and Islands of Scotland.

The "Dewar Report" or Highlands and Islands Medical Service Committee (1912) Report to the Lords Commissioners of His Majesty's Treasury[1] was presented to Parliament in 1913, resulting in the establishment of the Highlands and Islands Medical Service.

He married Elsie Johann (Joan) Tod (fourth daughter of Lord Forteviot of Dupplin) in 1884, however, she died in 1899.

Children with Johann Todd: Child with Elizabeth Holland: Lord Forteviot died in November 1929, aged 73, and was succeeded in his titles by his son from his first marriage, John.