Kavanagh (surname) Kavanagh (surname) Kavanagh or Kavanaugh is a surname of Irish origin, Caomhánach in Irish Gaelic. It is properly "Mac Murchadha Caomhánach" (an example of an Irish agnomen; see "Ó Catharnaigh Sionnach" or Fox of Fir Teathbha), but is often now rendered 'Caomhánach' or rarely 'Ó Caomhánaigh'. "Kavanagh" and "Kavanaugh" are anglicised variations of the Irish Gaelic surname Caomhánach (Cʌoṁʌ̃nʌċ in traditional Gaelic script). The surname was first assumed by Domhnall Caomhánach (the eldest son of the 12th century King of Leinster, Diarmait Mac Murchada) in Ireland. A considerable number of anglicised variations of Caomhánach exist, with some of the most
Crowley (surname) three-quarters of the family originating from there. The Irish "O Cruadhlaoich" or "Ua Cruadhlaoich", a Gaelic name meaning "descendant of the hard hero" or "descendant of the hardy warrior", was anglicised to "Crowley" or "O'Crowley". Variants include Crawley, Crowly, O'Crowley, Croaley, Croawley, O'Crowly and many more. Crowley (surname) The Irish surname Crowley was first found in Moylurg, in the County Roscommon, where they started as a branch of the MacDermots. It is from Teige, a Prince of Moylurg, down to Cruadhlaoch that the line of descent for the Crowleys begins. A junior branch of the Crowley family also emerged and