Umar was a son of the Umayyad caliph al-Walid I, who appointed him governor of Jund al-Urdunn. He was the commander of the Hajj pilgrimage to Mecca in November 707. In 710/11, Umar led an expedition against Byzantine territory alongside his uncle Maslama ibn Abd al-Malik. As governor of Jund al-Urdunn, Umar apparently questioned Peter of Capitolias, who was made a Christian saint, at some point before his adjudication and execution by al-Walid I. Representing the interests of Marwanid princes negatively affected by Caliph Umar II's economic policies, which reversed al-Walid I's liberal distribution of war spoils among members of the ruling family, Umar wrote a letter to the caliph; in it he accuses the caliph of abandoning his predecessor's policies, accusing them of oppression and detesting their descendants, to which the caliph responded by alleging the Umayyads abandoned the correct path by misusing public funds, illicitly shedding blood and ruling tyrannically. He is recorded by the sources being in a lawsuit in 738/39 with the Alid rebel leader Zayd ibn Ali, which was settled by Caliph Hisham ibn Abd al-Malik. He is recorded again having a dispute with his cousin, Caliph al-Walid II over a slave girl seized by the caliph. According to the historian al-Ya'qubi, Umar led the tribes of Jund al-Urdunn against his half-brother Caliph Yazid III during the Third Muslim civil war. Umar may have patronized the construction of the Khirbat al-Minya palace near the Sea of Galilee, according to Jere Bacharach. Umar is mentioned in numerous Arabic inscriptions found in the Syrian Desert palace of Qasr Kharana in modern Jordan, about 60 kilometers east of Amman. The inscriptions attest to visits by the prince at the beginning of the 8th century. The names of his sons Abd al-Malik and Abd Allah are each mentioned at least once in the inscriptions as well. The palace likely served as a resting place between Syria and Mecca.
Descendants
Umar was dubbed "the stallion of the Banu Marwan " or "the stud of the Banu Umayya " for his numerous marriages and his fathering of some sixty sons. Among his wives was Umm Abd Allah bint Habib, a granddaughter of al-Hakam ibn Abi al-As with whom he had his son Abd al-Malik. Abd al-Malik's son Habib escaped the massacre of the Umayyad family at Nahr Abi Futrus in the aftermath of the Abbasid Revolution of 750 and established himself in the Umayyad emirate in al-Andalus. There, the founder of the emirate, Habib's distant cousin Abd al-Rahman I, appointed him governor of Toledo and granted him properties around Cordoba, Cabra, Rayyu and Porcuna. His descendants were an influential family known as the Habibi clan. Umar's sons Isa and Hafs also relocated to al-Andalus. Descendants of Abd al-Malik and Isa are named by the sources as members of the Umayyad elite in al-Andalus up to the late 10th century.
