Tadg mac Cathail (died 956) was King of Connacht.

References[edit]

• Leabhar na nGenealach, Dublin, 2004–2005
• Annals of the Four Masters, ed. John O'Donovan, Dublin, 1856
• Annals of Lough Ce, ed. W.M. Hennessey, London, 1871.
• Irish Kings and High Kings, Francis John Byrne, 3rd revised edition, Dublin: Four Courts Press, 2001. ISBN 978-1-85182-196-9
• "Ua Ruairc", in Seán Duffy (ed.), Medieval Ireland: An Encyclopedia. Routledge. 2005. pp.