Muhammad Baqir al-Sadr, Iraqi cleric and philosopher (born 1935)

Muhammad Baqir al-Sadr, also known as al-Shahid al-Khamis, was an Iraqi Islamic scholar, philosopher, and the ideological founder of the Islamic Dawa Party. He was the father-in-law to Muqtada al-Sadr, a cousin of Muhammad Sadiq al-Sadr and Musa al-Sadr. His father Haydar al-Sadr was a well-respected high-ranking Shi'a cleric. His lineage can be traced back to Muhammad through the seventh Shia Imam Musa al-Kazim. Muhammad Baqir al-Sadr was executed in 1980 by the regime of Saddam Hussein along with his sister, Amina Sadr bint al-Huda.