From the Christmas Carol Songbook:
cantorion.org/ ... tmas-Carol-Songbook-Voice-SATB
"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 above text from the Wikipedia article "What Child Is This?" text is available under CC BY-SA 3.0.

그린슬리브즈(Greensleeves)는 영국의 전통 민요이자 곡조이다. 가장 널리 퍼진 전설로는 헨리 8세가 애인이자 이후에 반려자가 되는 앤 볼린을 위해 만들었다고 한다.
The above text from the Wikipedia article "그린슬리브즈" text is available under CC BY-SA 3.0.