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
Matthias, Holy Roman Emperor Holy Roman Emperor, as a result of Rudolf's illness. Allying himself with the estates of Hungary, Austria, and Moravia, Matthias forced his brother to yield rule of these lands to him in 1608; Rudolf later ceded Bohemia in 1611. Matthias's army then held Rudolf prisoner in his castle in Prague, until 1611, when Rudolf was forced to cede the crown of Bohemia to his brother. After Matthias's accession as Holy Roman Emperor, his policy was dominated by Klesl, who hoped to bring about a compromise between Catholic and Protestant states within the Holy Roman Empire in order to strengthen it.