Kyriakos or Cyriacus (, ;Database of Medieval Nubian Texts, Text 636. ) was a king of Makuria in Nubia in the mid-8th century.
Dating Although the History of the Patriarchs of Alexandria places Kyriakos's reign after Markos and during the late pontificate of MichaelI of Alexandria (), other authorities place it differently.
Life In the History of the Patriarchs of Alexandria, Kyriakos succeeded to the throne after King Markos was assassinated by partisans of his predecessor Abraham while praying in church. As the abdicated king Zacharias is not mentioned in relation to his ascension (as he was for the previous three kings), Zacharias may have died during the conflict.
The principal event of Kyriakos's reign was his invasion of Umayyad Egypt in support of the jailed pope of Alexandria MichaelI. This likely occurred around 748, during a Coptic revolt against Arab taxation and immediately proceeding the loss of Egypt to the Abbasids in 750. Kyriakos's army was said to have numbered 100,000 men. Although this figure is highly unlikely (unless including the rebelling Copts) and the invasion a violation of the Nubians and Arabs' long-standing truce known as the Baqt, Kyriakos reached as far as Fustat (medieval Cairo) and achieved his aims. The Umayyad governor Abd al-Malik ibn Marwan ibn Musa ibn Nusayr released MichaelI and Kyriakos's imprisoned envoy, sending the latter back to the Nubians to ask them to return to Makuria in peace.
See also Makuria Kings of Makuria Military history of Sudan
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. , traditionally ascribed to Severus of Hermopolis and his continuators, French sections translated 2005 by Roger Pearse. .