Lets start with Christmas Day 795. That’s the day Pope Hadrian died… so uh... Merry Christmas?
Hadrian was actually a pretty decent Pope… not Pope Francis level of awesome, though really who is? But he was still pretty good, and upon hearing of his death, Charlemagne commissioned Alcuin to write a poem that was carved into a black marble gravestone that said “I shed tears for the father. I, Charles, had these verses written for him. I weep for you father my heartfelt love. I unite the names with shining titles: Hadrian and Charles, I a king, you a father. You who pray here and read these humble verses, speak: God show mercy and take pity on these two.”