Shah (Pers. “King”), an abbreviation of Shah-in-Shah (“King of Kings”), the title by which the monarchs of Persia are known; may also be used in Afghanistan and other Asiatic countries, but more generally the less assuming title of Khan is taken.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Shaftesbury, Anthony Ashley Cooper, seventh Earl of * Shah-Jehan