Functional equivalent Irish names: short list
in reply to a message by Pie
Aeneas: Aengus
Ambrose: Anmchaidh
Barnabas: Brian
Barnaby: Brian
Barney: Brian
Bernard: Brian
Calvacius: Ceallach
Celsus: Ceallach
Charles: Cathal, Cathaoir, Searlas (Gaelicization of Charles)
Cornelius: Conor, Conn
Constantine: Conor, Conn
Daniel: Domhnall
Darby: Diarmaid
David: Dathi, Daibhidh (Gaelicization of David)
Dennis: Donnchadh
Dionysius: Donnchadh
Donald: Domhnall, Donnchadh
Edmund: Eamonn
Eugene: Eoghan
Felix: Feidhlim
Ferdinand: Domhnall
Florence: Fionn, Fionnan, Fionnghin
Giles: Gioll- names.
Homer: Uaithne
Hugh: Aodh, Aidan
Hugo: Uilleag, Uilliam
James: Seamas
Jeremiah: Diarmaid
Jeremy: Diarmaid
John: Eoin, Sean, Seoan
Justin: Saorbrethnach
Keen: Cian
King: Cian
Lawrence: Labhras, Lorcan
Longaevus: Siorne
Louis: Laighneach, Lugaidh
Lucius: Lugaidh
Luke: Lugaidh
Lysaght: Laoiseach
Malachi: Maelaghlin, other Maol- names.
Malachias: Maelaghlin
Matthew: Mathgamhain
Maurice: Muirchadh
Morgan: Muireadhach, Muircheartach
Moses: Maedoc
Owen: Eoghan
Patricius: Padraig, Paidin, other Patrick names
Quentin: Cu-Mhaighe
Quintus: Conn
Standish: Aneslis
Terence: Toirdhealbhach
Thaddeus: Tadhg
Thady: Tadhg
Timothy: Tadhg
Thomas: Tomaltach, Thomhas
Afra: Affraic
Amory: Imag
Ann: Aine
Bridget: Brigit
Bridey: Bride
Catherine: Catriona, Caitilin (Gaelicizations of Catherine)
Cecilia: Sighle
Celia: Sighle
Dorothy: Doireann
Dymphna: Damhnait (Dymphna is the Latinization)
Ellen: Oilen (Gaelicization), Aibhilin (Gaelicization of Avelina), Elec, Etain/Eadaoin.
Hannah: Aine
Helen: Oilen, Aibhilin, Elec, Etain/Eadaoin.
Honora: Onora (Gaelicization of Honora), Orlaith
Jane: Siobhan (Gaelicization of Jehanne)
Joanna: Siobhan
Judith: Sighle
Julia: Sighle
Mabel: Maedhbh
Marcella: Mairsil (Gaelicization of Marcella)
Margaret: Mairghread (Gaelicization of Margaret), Meadhbh
Margery: Mairsil
Martha: Mor, Maol Mheadha
Maura: Mor, Maire, Muireann
Mary: Maire (Gaelicization of Mary)
Mary Ann: Marion, Mor, Maire
Sabina: Sadhbh
Sally: Sealbhlaidh ("lady of possessions"), Sadhbh, Sorcha ("clear, bright")
Sarah: Saraidh ("excellent") Sadhbh, Sorcha
Sidby: Sadhbh
Susanna: Sadhbh
Teresa: Treise
Theresa: Treise
Una (as in Ecclesia una sancta Catholica): Úna ("lamb" or "famine")
Ambrose: Anmchaidh
Barnabas: Brian
Barnaby: Brian
Barney: Brian
Bernard: Brian
Calvacius: Ceallach
Celsus: Ceallach
Charles: Cathal, Cathaoir, Searlas (Gaelicization of Charles)
Cornelius: Conor, Conn
Constantine: Conor, Conn
Daniel: Domhnall
Darby: Diarmaid
David: Dathi, Daibhidh (Gaelicization of David)
Dennis: Donnchadh
Dionysius: Donnchadh
Donald: Domhnall, Donnchadh
Edmund: Eamonn
Eugene: Eoghan
Felix: Feidhlim
Ferdinand: Domhnall
Florence: Fionn, Fionnan, Fionnghin
Giles: Gioll- names.
Homer: Uaithne
Hugh: Aodh, Aidan
Hugo: Uilleag, Uilliam
James: Seamas
Jeremiah: Diarmaid
Jeremy: Diarmaid
John: Eoin, Sean, Seoan
Justin: Saorbrethnach
Keen: Cian
King: Cian
Lawrence: Labhras, Lorcan
Longaevus: Siorne
Louis: Laighneach, Lugaidh
Lucius: Lugaidh
Luke: Lugaidh
Lysaght: Laoiseach
Malachi: Maelaghlin, other Maol- names.
Malachias: Maelaghlin
Matthew: Mathgamhain
Maurice: Muirchadh
Morgan: Muireadhach, Muircheartach
Moses: Maedoc
Owen: Eoghan
Patricius: Padraig, Paidin, other Patrick names
Quentin: Cu-Mhaighe
Quintus: Conn
Standish: Aneslis
Terence: Toirdhealbhach
Thaddeus: Tadhg
Thady: Tadhg
Timothy: Tadhg
Thomas: Tomaltach, Thomhas
Afra: Affraic
Amory: Imag
Ann: Aine
Bridget: Brigit
Bridey: Bride
Catherine: Catriona, Caitilin (Gaelicizations of Catherine)
Cecilia: Sighle
Celia: Sighle
Dorothy: Doireann
Dymphna: Damhnait (Dymphna is the Latinization)
Ellen: Oilen (Gaelicization), Aibhilin (Gaelicization of Avelina), Elec, Etain/Eadaoin.
Hannah: Aine
Helen: Oilen, Aibhilin, Elec, Etain/Eadaoin.
Honora: Onora (Gaelicization of Honora), Orlaith
Jane: Siobhan (Gaelicization of Jehanne)
Joanna: Siobhan
Judith: Sighle
Julia: Sighle
Mabel: Maedhbh
Marcella: Mairsil (Gaelicization of Marcella)
Margaret: Mairghread (Gaelicization of Margaret), Meadhbh
Margery: Mairsil
Martha: Mor, Maol Mheadha
Maura: Mor, Maire, Muireann
Mary: Maire (Gaelicization of Mary)
Mary Ann: Marion, Mor, Maire
Sabina: Sadhbh
Sally: Sealbhlaidh ("lady of possessions"), Sadhbh, Sorcha ("clear, bright")
Sarah: Saraidh ("excellent") Sadhbh, Sorcha
Sidby: Sadhbh
Susanna: Sadhbh
Teresa: Treise
Theresa: Treise
Una (as in Ecclesia una sancta Catholica): Úna ("lamb" or "famine")