Back to the boardThe boardPlatforms not linked yet.Ustadh Sis✓ Source-basedrising8th-century Persian anti-Abbasid rebel leaderBorn 800FollowCompareShareClaimFame47.1Momentum6.9Languages8In century#781Ustadh Sis was a Persian heresiarch and anti-Abbasid rebel leader. It is speculated that he was once a governor of Khorasan and possibly father to Al-Ma'mun’s Iranian mother, Marajil, which would make him Ma'mūn's maternal grandfather.Also inDeutschAbout this personDatesBorn 800Written about in8 languagesFame.am measures public visibility signals. It does not measure human value, talent, morality, or credibility.