The first completionist was to be the Reverend A. E. Robertson, in 1901, later minister at Braes of Rannoch from 1907. However, research has cast doubt on this claim, and it is not certain that he reached the summit of Ben Wyvis. Also it is known that Robertson did not climb the Inaccessible Peak of Sgùrr Dearg. If Robertson is discounted, the first Munroist is Ronald Burn, who completed in 1923. Burn is also (indisputably) the first person to climb all the Munro Tops.