Rolfe, Frederick William, and C.H. Pirie-Gordon. Hubert's Arthur: Being Certain Curious Documents Found Among the Literary Remains of Mr. N.C.
Divergence: c 1199 CE
What if: Arthur Plantagenet escaped from King John.
Summary: Arthur becomes King of Jerusalem and later returns to England to overthrow his uncle.
Published: Cassell 1935; and Arno 1978 (0405110057).