Born in South Wales, he relocated to London with his family as a child, and was educated at Christ's Hospital.

[2] From 1908 to 1930, Morris lived in California as a staffperson of the Theosophical Society headquarters at Point Loma.

The last seven years of his life were spent back in his native Wales, during which time he founded seven Welsh theosophical lodges.

Morris was a friend of Talbot Mundy, and the two writers often commentated on each other's work in magazine The Theosophical Path.

[3] According to Ursula K. Le Guin, Morris is one of the three master prose stylists of fantasy of the 20th century, together with E. R. Eddison and J. R. R.