Mackail, Denis George (1892–1971)

English novelist and biographer. Among his best-known books are Bill the Bachelor 1922, Another Part of the Wood 1929, Life with Topsy 1942, Tales for a Godchild 1944, and It Makes the World Go Round 1950. He also wrote The Story of J. M. B. 1941, the standard life of J M Barrie, who was a close friend.

Mackail was born in Kensington, London, and educated at St Paul's and Balliol College, Oxford. He was for a time a stage designer and later worked in the Print Room of the British Museum. He wrote numerous popular light novels and many short stories for magazines.