Aga Khan
The Aga Khan (of that time) was an acquaintance of Prince Yuri Lubovedsky, according to the text. Aga Khan is a title held by the Imam of the Nizari Ismä’ili Shias. The “aga” means “elder man” or “master” or “lord.” “Khan” means king or ruler. Every Aga Khan is purported to be a descendant of Mohammed (I.e. a Siaid.)