83%RatingSave Gender Masculine Usage Irish Meaning & HistoryExpand Links Anglicized form of Donnchadh (see Duncan). Related NamesFamily Tree·Details Rootsdonn + cathVariantsDonnacha, Donncha, DonnchadhOther Languages & CulturesDuncan(English) Donnchad(Old Irish) Duncan(Scottish) Donnchadh(Scottish Gaelic) Categories anglicizations, brown, colors, isograms