John Martineau

John Martineau (1834–1910) was an English writer whose surviving published work includes Letters from Australia and The Life of Henry Pelham, Fifth Duke of Newcastle, 1811–1864. Those books show two sides of his writing: one grounded in personal travel and observation, the other in historical and biographical research.

Letters from Australia grew out of his experiences in the Australian colonies in the 1860s, giving modern readers a lively picture of travel, society, and public life in that period. His later biography of the Duke of Newcastle reflects a more formal, documentary style and an interest in public affairs.

Although detailed biographical information about him is not easy to confirm from widely available sources, his work still suggests a thoughtful Victorian author who moved comfortably between eyewitness narrative and historical portraiture.