Abdul Kadir – former Guyanese politician, convicted of the 2007 John F. Kennedy International Airport attack plot[48] David Benjamin Keldani – former Catholic priest who converted to Islam and changed his name to Abd ul-Aḥad Dāwūd[49] Nuh Ha Mim Keller – Islamic scholar who converted from Catholicism to agnosticism to Sunni Islam[50] Allahverdi Khan – general and statesman of Georgian origin who was Christian[51] Mirza Malkam Khan – Iranian Armenian proponent of Freemasonry who was active during the period leading up to the Iranian Constitutional Revolution[52] John Tzelepes Komnenos – allied himself with the Seljuks against his uncle; Greek convert[53][54]