Person

al-ʿAbbās ibn ʿAbd al-Muṭṭalib

العباس بن عبد المطلب

Abū al-Faḍl

568 CE – 653 CE(aged ~85) Banū Hāshim

Paternal uncle of the Prophet ﷺ. Two years older than the Prophet. Wealthy merchant who, while initially neutral, secretly supported the Prophet from early on. Captured by the Muslims at Badr (where he fought on the Quraysh side under duress) and ransomed. Publicly accepted Islam shortly before the Conquest of Mecca (630 CE). Ancestor of the Abbasid caliphs (al-Saffāḥ, al-Manṣūr, Hārūn al-Rashīd, etc.) through his son ʿAbd Allāh ibn ʿAbbās — the great companion who is one of the most prolific transmitters of hadith and tafsīr.

Significance

Paternal uncle of the Prophet ﷺ. Two years older than the Prophet. Wealthy merchant who, while initially neutral, secretly supported the Prophet from early on. Captured by the Muslims at Badr (where he fought on the Quraysh side under duress) and ransomed. Publicly accepted Islam shortly before the Conquest of Mecca (630 CE). Ancestor of the Abbasid caliphs (al-Saffāḥ, al-Manṣūr, Hārūn al-Rashīd, etc.) through his son ʿAbd Allāh ibn ʿAbbās — the great companion who is one of the most prolific transmitters of hadith and tafsīr.
Sources: Wikipedia and classical Islamic biographical literature compiled by automated researchers. Every page is being continuously refined — if something looks off, please check back in a few days.