Abū ‘Abd Allāh Muḥammad ibn Sa‘d ibn Manī‘ al-Baṣrī al-Hāshimī or simply Ibn Sa'd (Arabic: ابن سعد) and nicknamed Scribe of Waqidi (Katib al-Waqidi), was a scholar and Arabian biographer. Ibn Sa'd was born in 784/785 CE (168 AH) and died on 16 February 845 CE (230 AH). Ibn Sa'd was from Basra, but lived mostly in Baghdad, hence the nisba al-Basri and al-Baghdadi respectively. He is said to have died at the age of 62 in Baghdad and was buried in the cemetery of the Syrian gate. Source: Wikipedia (en)