Henry Loomis and Jane Herring Greene, the grandnephew of William Maxwell Evarts, and the great-great-grandson of American founding father Roger Sherman.

[citation needed] Born on October 31, 1887, in Yokohama, Japan, he was educated at the Hotchkiss School in Lakeville, Connecticut.

[4] His BLitt dissertation, written under the supervision of Arthur Napier and C. F. Bell, was titled Illustrations of the Romances in Mediæval English Art.

His most notable book Arthurian Tradition and Chrétien de Troyes, published by Columbia University in 1949, won the Haskins Medal of the Mediaeval Academy of America.

After the death of his first wife in 1921, Loomis married Laura Alandis Hibbard (1883–1960), with whom he collaborated in many of his research and writing efforts.