Northamptonshire.
In Northamptonshire this festival was called “Dyzemas Day.” Miss Baker, in her Glossary of Northamptonshire Words (1854, vol. i. p. 207), says she was told by a sexagenarian on the southern side of the county that, within his remembrance, this day was kept as sacred as the Sabbath, and it was considered particularly unlucky to commence any undertaking, or even to wash, on the same day of the week throughout the year on which the anniversary of this day last fell, and it was commonly said, “What is begun on Dyzemas Day will never be finished.”
The source of the ill-omened Dyzemas has not been settled: its origin has been suggested from Greek dus, and mass, as being expressive of misfortune, evil, peril, in allusion to the massacre of the Innocents. A correspondent of N. & Q. (2nd S. vol. iii. pp. 289 and 495) asks if it has not reference to the name Desmas, given to one of the thieves crucified with our Lord; universal tradition seeming to attach Desmas to the penitent, and Gestas (or Yesmas) to the impenitent thief? And if the local tradition has any reference to these names, it would seem as if Desmas was the name of ill-omen. It has also been suggested that Dyzemas Day is tithe day: in Portuguese, dizimas, dizimos, tenths, tithes; in law Latin, decimae, the same. Timbs thinks it referable to the old north-country word disen, i.e., to dress out in holiday finery, especially at this festive season.—Something for Everybody, (1861, p 154).