The origins of the song "We Wish You a Merry Christmas" are not entirely clear. However, there are several theories regarding its composer. Some historians believe that the song was first published in the 19th century by a group of people who were known as the "Worshipful Company of Parish Clerks" in London, England. Others believe that it was composed by a man named John Francis Wade in the 18th century. Regardless of its composer, the song has become a beloved Christmas classic and is sung by people around the world each year.