Nowell, nowell, nowell, nowell,
Tidinges good I think to tell.
The boares head that we bring here
Betokeneth a Prince without peer
Is born this day to buy us dear
A boar is a sovereign beast
And acceptable in every feast;
So mote this Lord be to most and least;
This boares head that we bring with song
In worship of him that thus sprang
Of a virgin to redress all wrong;
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Source: Musica Britannica, VOl IV - Mediaeval Carols
I added this song to compare it to the folk "Boars Head Carol". I should have checked first that we already had that carol in the site!