Bucephalus later versions of the Alexander Romance also synchronized the hour of their death. The pair forged a sort of cult in that, after them, it was all but expected of a conqueror that he have a favourite horse. Julius Caesar had one; so too did the eccentric Roman Emperor Caligula, who made a great fuss of his horse Incitatus, holding birthday parties for him, riding him while adorned with Alexander's breastplate, and planning to make him a consul. Bucephalus is referenced in art and literature. Paintings of Charles Le Brun's Alexandrine subjects, including Bucephalus, survive today in the Louvre. One
Coronation of the Holy Roman Emperor and Constantia we see the Roman imperial ritual in substantially its final form; the imperial coronation ritual used for Henry VII in 1312 and that found in the Roman Pontifical of 1520 differ from it only in certain details. The Emperor and Empress go in procession to St. Mary in Turri, the choir singing, "Behold, I send an angel" (1312--The Emperor is received as a brother canon by the canons of the church and dressed in a surplice and an almuce.) The Emperor takes the Oath to defend the Roman Church and swears fealty to the Pope and his successors