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Donnchadh (Scottish Gaelic pronunciation: [ˈt̪ɔn̪ˠɔ.xəɣ])[1] is a masculine given name common to the Irish and Scottish Gaelic languages. It is composed of the elements donn, meaning "brown"; and chadh, meaning "chief" or "noble".[2] The name is also written as Donnchad, Donncha, Donnacha, Donnchadha and Dúnchad. Modern versions include (in Ireland) Donagh, Donough, Donogh and (in Scotland) Duncan. Also anglicised as Dennis or Denis and Dionysius.[citation needed]

The surnames Donough, McDonagh, McDonough, O'Donoghue and Dunphy among others are derived from the given name (In Gaelic: Mac - son of, Ó - of the family of). Another derivation is the name of the Scottish Clan Donnachaidh.[citation needed]


Old Irish Modern Irish Hiberno-English Scottish Gaelic Scottish English
Donnchad(h) Donncha Donagh Donnchadh


Historically, it can refer to the following:

See also[edit]


  1. ^ "Donnchadh". Am Faclair Beag (Gaelic Dictionary). Retrieved 20 May 2019.
  2. ^ Hanks, Patrick; Hodges, Flavia (2006). Hardcastle, Kate (ed.). Oxford Dictionary of Names (2nd ed.). Oxford: Oxford University Press. pp. 81, 402. ISBN 978-0-19-861060-1.