Words and Music: Traditional English
(From the MS. Sloane, No. 2593, fol. 79, r^o, written about the time of Henry VI.)

Versions:
Wolcu zol thu mery ma (William Sandys, 1833)
Welcü Yole In Good Array (William Sandys, 1852)
Wolcum be thu, hevene kyng (Thomas Wright, 1841)
Welcome Yule (Edith Rickert, 1910)
Welcome Yule (Charles L. Hutchins, 1916)

Source: Thomas Wright, Specimens of old Christmas Carols, Selected from Manuscripts and Printed Books (London: The Percy Society, 1841)

This carol requires the installation of the "Junius Modern" font for best display.
See notes in F A Q

Wol be thu, hevene kyng,
Wolcum, born in on morwenyng,
Wolcum, for home we xal syng,
                            wolcum õol.

Wolcum be õe, Stefne and Jon,
Wolcum, Innocentes everychon,
Wolcum, Thomas marter on,
                            wolcum õol.

Wolcum be õe, good newe õere,
Wolcum, tweltye day both in fere
Wolcum, seyntes lef and dere,
                            wolcum õol.

Wolcum be õe, Candylmesse,
Wolcum be õe, qwyn of blys,
Wolcum bothe to more and lesse,
                            wolcum õol.

Wolcum be õe that arn here,
Wolcum, alle, and mak good chere,
Wolcum, alle, another õere,
                            wolcum õol.

Note:

• Feast day of St. Stephan the First Martyr is December 26; See: Hymns to St Stephen

• Feast day of St. John the Apostle and Evangelist is December 27; See: Hymns To St. John The Evangelist

• Feast day of the Holy Innocents, Martyrs, is December 28; See: The Hymns Of The Holy Innocents

• Feast day of St. Thomas, Bishop and Martyr is December 29;

• January 1 is the Octave of Christmas, and the start of the New Year;

• Twelfth Day is Epiphany, January 6;

• Candlemas (the blessing of the candles) is February 2; See: Candlemas

• The Feast of the Purification of the Blessed Virgin Mary is February 2.