Analysis of information sources in references of the Wikipedia article "The First Noel" in English language version.
carol of the 16th or 17th century, but possibly dating from as early as the 13th century. Barrie Jones, ed. (2014). "carol". The Hutchinson Concise Dictionary of Music. Routledge.
Christmas carols were common as early as the 15th century. ... Many carols, such as 'God Rest You Merry, Gentlemen' and 'The First Nowell', date from the 16th century or earlier.
