Well, I'd say the version I hear most is close to this one (click)

running the tune through ABCMUS, I come up with these chords, which may or may not make much sense:

  %           Dm                                       C       Dm
  A,|D2 D2|D3D|E-D C2|D2 DD|D2 D2|F2 G2|A4-|Az |
  W: A ho- li- day, a ho- li- day, And the first one of the year,
  
  %   C                               Dm             C               Dm
  A2 |c2 c2|A3A|G2 ED|C3C|D2 F2|E2 C2|D4-|D2 z||
  W: Lord Dar- nell's wife came in- to the church The gos- pel for to hear.

This is the chords-only output from ABCMUS:

| Dm / | / | Am / | Dm / | / / | / C | Dm | / |

/ | Am / | Dm | C Am | / | Dm / | Am / | Dm | ||

Tradsteve is the proud owner of Volume 2 of the Dover edition of the Child Ballads, so he has at least 14 versions of the lyrics. There are several versions of the lyrics in various threads.

-Joe Offer-