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1911 Encyclopedia Britannica
In Celtic legend, the name of (1) the hero of the Welsh Mabinogi of Branwen, who dies in the attempt to avenge his sister's wrongs; he is the son of Llyr (= the Irish sea-god Ler), identified with the Irish Bran mac Allait, Allait being a synonym of Ler; (2) the son of Febal, known only through the 8th-century Irish epic, The Voyage of Bran (to the world below); (3) the dog of Ossian's Fingal. Bran also appears as a historical name, Latinized as Brennus. See Kuno Meyer and D. Nutt, The Voyage of Bran (London, 1895).
These files are public domain.
Chisholm, Hugh, General Editor. Entry for 'Bran (Mythology)'. 1911 Encyclopedia Britanica. https://www.studylight.org/encyclopedias/eng/bri/b/bran-mythology.html. 1910.