Complex sentence: Christina Oxenberg is a direct descendant of Karageorge, the modern liberator of Serbia and founder of the Karageorgevic Dynasty, of George I of Greece, Tsar Alexander II of Russia.
Split into simpler sentences: Christina Oxenberg is a direct descendant of Karageorge, the modern liberator of Serbia and founder of the Karageorgevic Dynasty. She is also a direct descendant of George I of Greece and Tsar Alexander II of Russia.