‘Cromwellian apologists, like the Cromwell Association, argue that there is no evidence to support the myth that Oliver Cromwell banned Christmas:
There is no sign that Cromwell personally played a particularly large or prominent role in formulating or advancing the various pieces of legislation and other documents which restricted the celebration of Christmas, though from what we know of his faith and beliefs it is likely that he was sympathetic towards and supported such measures, and as Lord Protector from December 1653 until his death in September 1658 he supported the enforcement of the existing measures.
I see. He was just a fellow-traveler. The Cromwell Association explains that it was “the broader Godly or parliamentary party, working through and within the elected parliament, which in the 1640s clamped down on the celebration of Christmas and other saints’ and holy days.”’ [full Law Librarian post]