"What Child Is This?" is a Christmas carol whose lyrics were written by William Chatterton Dix, in 1865. At the time of composing the carol, Dix worked as an insurance company manager and had been struck by a severe illness. While recovering, he underwent a spiritual renewal that led him to write several hymns, including lyrics to this carol that was subsequently set to the tune of "Greensleeves", a traditional English folk song. Although it was written in Great Britain, the carol is more popular in the United States than in its country of origin today.
The lyrics of the carol are taken from a poem written by Dix called "The Manger Throne".The part of the poem that was utilized as the song's lyrics consists of three stanzas in total. The first verse poses a rhetorical question in the first half, with the response coming in the second half. The second verse contains another question that is answered, while the final verse is a universal appeal to everyone urging them "to accept Christ". The carol's melody has been described as "soulful", "haunting and beautiful" in nature.
Although written in 1865, "What Child Is This?" was only first published six years later in 1871, when it featured in Christmas Carols Old and New, a "prestigious" and "influential" collection of carols that was published in the United Kingdom. The hymnal was edited by Henry Ramsden Bramley and John Stainer; even though it is not known with certainty who paired the three stanzas from "The Manger Throne" with the music from "Greensleeves", the third edition of The Christmas Encyclopedia by William D. Crump and Stories of the Great Christmas Carols both suggest that Stainer – who was also responsible for "harmoniz[ing] the musical setting" – may have done so.
Information quoted from WiKipedia
Last but not least, i wish you all a healthy & joyful advent.