He was educated at Clifton and Inverness Colleges and graduated MB CM with honours from the University of Edinburgh in 188e and MD in 1888.
He was awarded gold medal for his thesis,[1] which was titled: A contribution to the study of hemianopsia of central origin: with special reference to acquired colour blindness and a clinical report of 4 cases.
"We remember a distinguished figure, walking to and from the Infirmary irreproachably dressed, with a well-cut morning coat, shining tall hat, and immaculate linen.
[6] He is the son of Surgeon-General George Mackay, who served in the Indian Army, and was instrumental to the establishment of the Medical College of Madras.
[7] His great-grandfather was Lt-Col. George Mackay,[7] whose wife's portrait was painted by Henry Raeburn.