Haydar al-Sadr

Ayatollah Haydar al-Sadr (Arabic: حيدر الصدر; 1891–1937) was born in Samarra, Iraq.

Haydar and the as-Sadr family are also considered as Sayyid, or those who can trace their lineage back to Muhammad (d. 632).

The Shia Muslims consider themselves the followers of Muhammad's bloodline, thus a great deal of respect and reverence is paid to the Sayyids throughout society.

Haydar was considered a grand marja at-taqlid (supreme religious authority) of his time.

He died in Kazimain, Iraq in 1937 leaving three children: Isma'il, Mohammad Baqir as-Sadr (d. 1980) and Aminah (known as Bint al-Hoda).