"Lucius von Chur". Diocese of Augsburg (in German). Retrieved 2024-12-03.
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In Haddan, Stubbs & Wilkins 1869, p. 25, this passage is given as "Hic accepit epistulam a Lucio Britanniæ Rege ut Christianus efficeretur per ejus mandatum." ('He accepted a letter from Lucius, King of Britain, that he might become a Christian by his own will.') In Knight 2012, p. 14 the passage is quoted as "Hic accepit epistolam a Lucio Brittaniorum rege ut Xrianus efficeretur per ejus mandatum." ('He accepted a letter from Lucius, king of the Britons, that he might become a Xian by his own will.') Haddan, Arthur West; Stubbs, William; Wilkins, David, eds. (1869). "Appendix A: Date of Introduction of Christianity into Britain". Councils and Ecclesiastical Documents Relating to Great Britain and Ireland. Vol. I. Oxford: Clarendon Press. p. 25. Knight, David J. (2012). King Lucius of Britain. Stroud, England: History Press. ISBN9780752474458.
Brusher 1980, p. 26: "St. Eleutherius c. 174 – c. 189[...] According to the Liber Pontificalis, St. Eleutherius was a Greek from Nicopolis in Epirus." Brusher, Joseph Stanislaus (1980). Popes Through the Ages. San Rafael, California: Neff-Kane. ISBN978-0-89-141110-9.
Butler, Attwater & Thurston 1956, p. 423: "St Eleutherius, Pope (c. A.D. 189)[...] It is stated that he was a Greek by origin." Butler, Alban; Attwater, Donald; Thurston, Herbert (1956). Butler's Lives of the Saints. Vol. 2. London: Burns & Oates.