During World War I he served in the Territorial Force but after being wounded joined family medical practice in Workington.
[2] McKerrow dedicated much of his life to studying evolution, philosophy, psychology and religious experiences.
He studied at the British Museum Reading Room and filled 500 notebooks with his ideas.
[3][4] In his book Religion and History, he argued that there never was an Apostolic Age and that Christianity began between A.D. 70 and 135 from Gnosticism, a blend of pagan philosophy and Jewish Messianism.
[6][7] He contended that life must be accepted as a "four-dimensional process" and that living organisms evolve though "habit".