Question: Where did the popular Christmas carol featured in the commercial "Christmas Bells" originate?

Context articles: Kalanta Xristougenon
Carol of the Bells
A Christmas Carol
Christmas Bells (advertisement)
Blandfordia cunninghamii
We Three Kings
Peter Wilhousky
I Heard the Bells on Christmas Day
The Chimes
We Wish You a Merry Christmas

Kalanta Xristougenon (Κάλαντα Χριστουγέννων) is a Greek traditional Christmas carol (kalanta) translated into English simply as "Christmas Carol."
 This carol is commonly abbreviated as "Kalanta" or "Kalanda", some other common titles for this Christmas carol are Kalin Iméran and Christos Genate.
 This carol is commonly sung around Christmas and accompanied by light percussion instruments such as the Triangle (musical instrument) and Guitar.
"Carol of the Bells" is a popular Christmas carol composed by Ukrainian composer Mykola Leontovych in 1914 with lyrics by Peter J. Wilhousky.
 The song is based on a Ukrainian folk chant called "Shchedryk".
 Wilhousky's lyrics are copyrighted, although the original musical composition is not.
A Christmas Carol in Prose, Being a Ghost-Story of Christmas, commonly known as A Christmas Carol, is a novella by Charles Dickens, first published in London by Chapman & Hall in 1843; the first edition was illustrated by John Leech.
 "A Christmas Carol" tells the story of Ebenezer Scrooge, an old miser who is visited by the ghost of his former business partner Jacob Marley and the Ghosts of Christmas Past, Present and Yet to Come.
 After their visits Scrooge is transformed into a kinder, gentler man.
"Christmas Bells" is an American television commercial produced by the Hershey Company promoting Hershey's Kisses.
 The advertisement, produced with stop-motion animation, features Hershey's Kisses, fashioned as a handbell choir, playing the Christmas carol "We Wish You a Merry Christmas".
 It debuted in 1989 and is shown in the United States each holiday season; as such, it is the longest-running television commercial for the Hershey brand.
Blandfordia cunninghamii, commonly known as mountain Christmas bells or simply Christmas bells, is a tufted perennial herb found only in the Blue Mountains of eastern Australia.
"We Three Kings", also known as "We Three Kings of Orient Are" or "The Quest of the Magi", is a Christmas carol that was written by John Henry Hopkins, Jr. in 1857.
 At the time of composing the carol, Hopkins served as the rector of Christ Episcopal Church in Williamsport, Pennsylvania, and he wrote the carol for a Christmas pageant in New York City.
 Many versions of this song have been composed and it remains a popular Christmas carol.
Peter J. Wilhousky (Rusyn: Пітер (Петро) Вільховський ) (13 July 1902, Passaic, New Jersey – 1978) was a popular American composer, educator, and choral conductor of Carpatho-Rusyn ethnic extraction.
 During his childhood he was part of New York's Rusyn Cathedral Boys Choir and gave a performance at the White House to President Woodrow Wilson.
 He was featured on several broadcasts of classical music with Arturo Toscanini and the NBC Symphony Orchestra, including the historic 1947 broadcast of Verdi's opera "Otello".
 In 1936, he wrote the popular Christmas carol "Carol of the Bells"; a song with English lyrics to the popular composition by Ukrainian composer Mykola Leontovych originally known as "Shchedryk".
 His arrangement of the "Battle Hymn of the Republic" for chorus, band, and orchestra is probably the most famous arrangement of the hymn before the 1940s in the United States.
"I Heard the Bells on Christmas Day" is a Christmas carol based on the 1863 poem "Christmas Bells" by American poet Henry Wadsworth Longfellow.
 The song tells of the narrator's despair, upon hearing Christmas bells, that "hate is strong and mocks the song of peace on earth, good will to men".
 The carol concludes with the bells carrying renewed hope for peace among men.
The Chimes: A Goblin Story of Some Bells that Rang an Old Year Out and a New Year In, a short novel by Charles Dickens, was written and published in 1844, one year after "A Christmas Carol" and one year before "The Cricket on the Hearth".
 It is the second in his series of "Christmas books": five short books with strong social and moral messages that he published during the 1840s.
 In addition to "A Christmas Carol" and "The Cricket on the Hearth", the Christmas books include "The Battle of Life" (1846) and "The Haunted Man and the Ghost's Bargain" (1848).
"We Wish You a Merry Christmas" is a popular English Christmas carol from the West Country of England.