Connolly IrishAnglicized form of Irish
Ó Conghalaigh, which means
"descendant of Conghalach".
Conghalach is a nickname meaning "valiant".
Corcoran IrishFrom Irish
Ó Corcráin meaning
"descendant of Corcrán", a given name derived from the Gaelic word
corcair "purple".
Donnelly IrishFrom Irish
Ó Donnghaile meaning
"descendant of Donnghal". The given name
Donnghal means "brown valour", from
donn "brown" and
gal "valour". This surname is associated with the descendants of Niall of the Nine Hostages.
Driscoll IrishFrom Irish
Ó hEidirsceóil meaning
"descendant of the messenger".
Finnegan IrishAnglicized form of Irish
Ó Fionnagáin meaning
"descendant of Fionnagán". The given name
Fionnagán is a diminutive of
Fionn.
Flanagan IrishFrom Irish
Ó Flannagáin meaning
"descendant of Flannagán".
Flannagán is a given name meaning "blood red". From County Roscommon in Ireland, it has many other spellings.
Flannery IrishAnglicized form of Irish
Ó Flannghaile meaning
"descendant of Flannghal", a given name meaning "red valour".
Guinness IrishVariant of
McGuinness. The name is well known because of the Guinness brand of ale, established in 1759 by Arthur Guinness.
Halloran IrishFrom Irish
Ó hAllmhuráin meaning
"descendant of Allmhurán". The given name
Allmhurán means "stranger from across the sea".
Kavanagh IrishDerived from the Irish Gaelic name
Caomhánach, which means "a student of saint
Caomhán". It was the name used by a 12th-century king of Leinster, Domhnall Caomhánach, the eldest son of the historic Irish king Diarmait Mac Murchada.
Killough IrishIndicated a person who was from Killough (County Down, Northern Ireland) or Killough (Wicklow, Ireland). The place name Killough means "church on the lake", derived from the Irish
cill "church" and
loch "lake".
Mac Niadh IrishMeans
"son of Niadh" in Irish. The given name
Niadh means "champion".
McCauley Irish, ScottishAnglicized form of Gaelic
Mac Amhalghaidh or
Mac Amhalghadha meaning
"son of Amhalghaidh". The given name
Amhalghaidh, from Old Irish
Amalgaid, is of uncertain meaning.
McGovern IrishAnglicized form of Irish Gaelic
Mag Shamhradháin meaning
"son of Samhradháin", a given name meaning "summer".
McNamara IrishFrom Irish
Mac Conmara meaning
"son of Conmara". The given name
Conmara is composed of
cú "hound" and
muir "sea".
Milligan IrishAnglicized form of the Irish
Ó Maolagáin meaning
"descendant of Maolagán", a given name derived from
maol meaning "bald" or "tonsured".
Moriarty IrishFrom Irish
Ó Muircheartach meaning
"descendant of Muirchertach". This was the surname given by Arthur Conan Doyle to a master criminal in the Sherlock Holmes series.
Ó Cuilinn IrishMeans
"descendant of Cuileann",
Cuileann being a nickname meaning "holly".
Ó Meadhra IrishMeans
"descendant of Meadhra". The given name
Meadhra is derived from the Gaelic
meadhar meaning "merry, happy".
Ó Seighin IrishMeans
"descendant of Seighin". The given name
Seighin means "small hawk" from Old Irish
séigene.
Rafferty IrishAnglicized form of Irish
Ó Rabhartaigh meaning
"descendant of Rabhartach". The given name
Rabhartach means "flood tide".
Sheridan IrishFrom the Irish name
Ó Sirideáin meaning
"descendant of Sirideán". The given name
Sirideán possibly means "searcher".
Sullivan IrishAnglicized form of the Irish name
Ó Súileabháin meaning
"descendant of Súileabhán". The name
Súileabhán means "dark eye".