Christ (Greek for Messiah) started off as a title, and nowadays is thought of as a personal name, while Caesar was originally a personal name and became a title (Kaiser, Czar etc)

Actually, "Caesar" started off as a nickname, meaning "hairy", for someone in the Julian family. It then stuck around to indicate a descendant male in that branch of the Julians, a hereditary nickname, as it were. Then it became the title, after the time of Octavian/Augustus, and only later was adopted in various countries to indicate a ruler, presumably of sufficient importance to compare with the one we refer to as Julius Caesar and then Augustus Caesar, and their successors who were usually not related to those two "greats", not Julians.

Actually the "personal name" of the great Caesar we think of as being assassinated on the ides of March was Gaius. "Julius" was the family name, not a personal name at all.

Dave Oesterreich