César Franck (10 December 1822 — 8 November 1890)
Belgian/French composer - depending who you talk to!
This piece comes from L'Organiste a collection of 59 pieces. Vieux Noel - or Noel Suisse - is piece 6 of pieces in D major and minor. Being for harmonium rather than organ I made a few adjustments on the fly to make it more suited to manuals and pedals as well as making the registration compatible with organ.
The score can be found on IMSLP:
https://imslp.org/wiki/Special:ReverseLookup/130081
Hope you enjoy
John