Duighan
Duighan is a surname of Irish origin. It is an anglicized form of the Gaelic Ó Duibhcáin, meaning "descendant of Duibhcán". The personal name Duibhcán itself is a diminutive of "dubh," meaning "dark" or "black." The sept was historically found in the province of Munster, particularly in County Clare. Over time, as Gaelic patronymic surnames were anglicized, Ó Duibhcáin became various forms including Duignan, Duggan, and Duighan. The distribution of the surname today shows a significant presence in Ireland, with notable concentrations in the counties where the sept was historically prominent. Variations in spelling can occur due to the inconsistent nature of transliteration and anglicization processes that took place over centuries. Individuals bearing the Duighan surname can be found in Ireland and in countries with significant Irish diaspora populations, such as the United States, the United Kingdom, Canada, and Australia. Research into genealogical records can help trace the lineage of specific Duighan families back to their origins in Ireland.