People often ask why we choose 'Lilius' as a calendar name? Only because it is short and memorable word? Yes, but there is some story behind it as well.
There is no more "calendarish" name than Lilius. Aloysius Lilius (c. 1510 – 1576) was an Italian doctor, astronomer, mathematichian, chronologist and also the primary author of the new reformed Georgian calendar that was adopted on 15 October 1582 by order of the Pope Gregory (that's why it is called Gregorian) to fix the accumulated error of old Julian calendar.