George Macaulay Trevelyan, OM CBE FRS FBA, was a British historian and academic. He was a Fellow of Trinity College, Cambridge from 1898 to 1903. He then spent more than twenty years as a full-time author. He returned to the University of Cambridge and was Regius Professor of History from 1927 to 1943. He served as Master of Trinity College from 1940 to 1951. In retirement, he was Chancellor of Durham University.
Trevelyan was the third son of Sir George Otto Trevelyan, 2nd Baronet, and great-nephew of Thomas Babington Macaulay, whose staunch liberal Whig principles he espoused in accessible works of literate narrative avoiding a consciously dispassionate analysis, that became old-fashioned during his long and productive career. The noted historian E. H. Carr considered Trevelyan to be one of the last historians of the Whig tradition.
Many of his writings promoted the Whig Party, an important aspect of British politics from the 17th century to the mid-19th century, and its successor, the Liberal Party. Whigs and Liberals believed the common people had a more positive effect on history than did royalty and that democratic government would bring about steady social progress.