# Umar ibn Ubayd Allah ibn Ma'mar

> 7th-century Arab tribal leader and commander of the Islamic caliphate

**Wikidata**: [Q28715255](https://www.wikidata.org/wiki/Q28715255)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Umar_ibn_Ubayd_Allah_ibn_Ma'mar)  
**Source**: https://4ort.xyz/entity/umar-ibn-ubayd-allah-ibn-ma-mar