He was born at Edinburgh on 2 December 1687, and joined the Scottish Benedictines at Ratisbon in 1708.
He was doctor and professor of philosophy and divinity, and for a period superior of the Scotch monastery at Erfurt.
He wrote Monasticon Scoticon, completed by Maurice Grant, which remained unpublished.
The manuscript was preserved at St. Mary's College, Blairs; it was used by James Frederick Skinner Gordon in his Monasticum (1867).
Brockie wrote also 'Observationes critico-historicæ' on the 'Regulæ ac Statuta recentiorum Ordinum et Congregationum' which constitute the 3rd, 4th, 5th, and 6th volumes of Holstenius's 'Codex Regularum Monasticarum et Canonicarum,' printed at Augsburg in 1759.