Pope Urban IV (1261–1264) created fourteen new cardinals in two consistories. The exact dates of these consistories are not clear. Contemporary reports suggest that they were held on December 24, 1261 ("Saturday before Christmas") and in May 1262. However, some modern authors contest the accuracy of these reports as contradicting the established custom of that time, according to which the promotions of cardinals were celebrated on Saturdays of the Ember weeks, which fell on December 17, 1261 and June 3, 1262 respectively.
Contents
Consistory of December 1261
Consistory of May 1262
References
Cardinals created by Urban IV Wikipedia(Text) CC BY-SA