Line of Descendancy from King Charles I of England to Prince Karim El Husseni (Aga Khan IV) ..1 King Charles I of England (1600 - 1649) .. + Henriette Marie Bourbon (1609 - 1669) ....2 King Charles II of England (1630 - 1685) .... + Louise de Penancouet de Keroualle (1649 - 1734) ......3 Sir Charles Lennox (1672 - 1723) ...... + Anne Brudenell ( - 1722) ........4 Sir Charles Lennox (1701 - 1750) ........ + Sarah Cadogan ( - 1751) ..........5 Emilia Mary Lennox (1731 - 1814) .......... + Sir James FitzGerald (1722 - 1773) ............6 Sir William Robert Fitzgerald (1749 - ) ............ + Emilia Olivia Usher ..............7 Emily Fitzgerald (1778 - ) .............. + John Joseph Henry ................8 Reginald Hastings Henry ( - 1878) ................ + Barbara Yelverton (1810 - 1858) ..................9 Barbara Yelverton (1849 - 1924) .................. + Sir John Yarde-Buller ....................10 Sir John Yarde-Buller (1873 - 1930) .................... + Jessie Smither ......................11 Joan Yarde-Buller (1908 - ) ...................... + Aly Khan ........................12 Prince Karim El Husseni (1936 - )(Aga Khan IV)