"Umar ibn Abd al-Aziz (Arabic: عمر بن عبد العزيز, romanized: ʿUmar ibn ʿAbd al-ʿAzīz; 2 November 682 – c. 5 February 720), commonly known as Umar II, was ...
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the eighth Umayyad caliph, ruling from 22 September 717 until his death in 720. He was also a cousin of the former caliph, being the son of Abd al-Malik´s younger brother, Abd al-Aziz. He was also a matrilineal great-grandson of the second caliph, Umar ibn Al-Khattab." - (en.wikipedia.org 27.10.2019)
