There is a much literature and research around the origins of this carol. Some musical facts emerged around the reign of Henry VI (1422-1461) with documented evidence of five carols including Sir Christemas/Welcome Yule, A Yule-tide Carol and A Babe is Born found in the British Museum in London and Bodleian Library in Oxford. Some have additional verses to the one I have chosen to set, which is a modernised version of what is thought to be the original, written by Richard Smart in the 15th century. It was picked up by Vaughan Williams and his colleagues and published in the Oxford Book of Carols in 1928 and again in 1954 but I have made a small number of changes to modernise spelling and help with scansion. Smart was a Devon rector and “vicar-choral” at Exeter Cathedral (1428-ca. 1466) and he may also be responsible for The Boar’s Head (Bory’s Hede) carol amongst others.