Mog Ruith

Legendary Irish magician from Munster, who was linked in Ireland to biblical and apocryphal traditions, notably as a pupil under Simon Magus and as one responsible for the beheading of John the Baptist. He appears in Irish genealogies as a descendant of Medb and her lover Fergus mac Roích and as an ancestor for Fir Maige Féine, in the area about present-day Fermoy.

See also: John the BaptistJohn the Baptist
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Simon MagusSimon Magus
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mythological figure TlachtgaTlachtga (mythological figure)
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Secondary sources (select)

O'Leary, Aideen M., “Mog Ruith and apocalypticism in eleventh-century Ireland”, in: Nagy, Joseph Falaky [ed.], The individual in Celtic literatures, CSANA Yearbook 1, Dublin: Four Courts Press, 2001. 51–60.
Charles-Edwards, T. M., Early Christian Ireland, Cambridge: Cambridge University Press, 2000.
Müller-Lisowski, Käte, “La légende de saint Jean dans la tradition irlandaise et le druide Mog Ruith”, Études Celtiques 3:5 (1938): 46–70.
Journal volume:  Persée – Études Celtiques, vol. 3, fascicule 5, 1938: <link> Persée – Études Celtiques, vol. 3, fascicule 6, 1938: <link>
Müller-Lisowski, Käte, “Texte zur Mog Ruith Sage”, Zeitschrift für celtische Philologie 14 (1923): 145–163.
CELT – edition: <link> Internet Archive: <link>
Ferreiro, Alberto, “Simon Magus and Simon Peter in medieval Irish and English legends”, in: Ferreiro, Alberto, Simon Magus in patristic, medieval and early modern traditions, Studies in the History of Christian Traditions Series 125, Leiden: Brill, 2005. xii + 372 pp. 201–220.
Carey, John, “An Old Irish poem about Mug Ruith”, Journal of the Cork Historical and Archaeological Society 110 (2005): 113–134.
Griffin-Wilson, Margo, “Mythical and local landscapes: Dáibhí Ó Bruadair’s Iomdha sgéimh ar chur na cluana”, Celtica 25 (2007): 40–60.
Celtica – PDF: <link>
McNamara, Martin, The apocrypha in the Irish Church, Dublin: Dublin Institute for Advanced Studies, 1975.
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Dennis Groenewegen
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August 2016, last updated: April 2021