• Latin Names in Catholic Records

    Albertus = Albert or George
    Adam (Ade) = Adam
    Aedus = Hugh
    Aemilia = Emily
    Agna = Agnes, Nancy
    Agneta = Agnes
    Alanus = Alan
    Albertus = Albert
    Alesia, Alicia = Alice
    Alfredus, Aluredus = Alfred
    Alicia = Alice, Elsie, Alyssa
    Alienora, Eleanora, Elianora = Eleanor
    Aloisius = Aloysius, Louis, Luis
    Aloysius = Aloysius or Lewis
    Alvredus = Alfred
    Amica, Amata, Amia = Amy
    Anastasia = Anastasia or Nancy
    Andreas = Andrew
    Anna = Ann, Anne
    Antonius = Anthony
    Arcturus, Artorius, Arturus = Arthur
    Audoenus, Audoinus, Oeneus, Oenus = Owen
    Augustinus = Austin
    Avelina = Evelyn
    Bartholomeus = Bartholomew
    Beatrix = Betteris, Beatrice
    Benedicta (f.)= Benedict, Benet
    Benedictus (m.) = Benedict, Benet
    Bertrandus = Bertram
    Brigida, Brigitta = Bridget, Brigid
    Carolum, Carolus = Charles, Carl
    Caterina, Katerina, Katharina = Catherine
    Catharina = Catherine, Kathryn, Kathleen
    Cecilia = Cisley, Cecily
    Cecilius = Cecil
    Christiana, Christina = Christine
    Christophorus = Christopher
    Constantia, Custancia = Constance
    Daniele = Daniel
    Denisia, Dionisia = Denise
    Dionisius, Dionisius, Dionysius = Denis
    Donatus = Duncan
    Dorothea = Dorothy
    Eadmundus, Edmundus = Edmund, Edmond
    Eadwardus, Eduardus, Edwardus = Edward
    Egidius = Giles
    Lena = Helen, Ellen
    Elias = Ellis
    Elisabetha, Elizabetha = Elizabeth, Beth, Betty,
    Erchenbaldus = Archibald
    Eustachius = Eustace
    Eva = Eve
    Felicia = Felice
    Francisca (f.) = Frances
    Franciscus (m.) = Francis, Frank
    Fridericus = Frederick
    Georgius = George
    Gerardus = Gerard
    Gilebertus, Gislebertus = Gilbert
    Giraldus, Geroldus = Gerald
    Godefridus, Godefredus = Godfrey
    Goisfridus, Gosfridus = Geoffrey
    Gratia = Grace
    Gualterus = Walter
    Guglielmus, Gulielmus, Guilhelmus, Gulielmo, Gulielmum = William
    Haraldus = Harold
    Helena = Helen, Ellen, Nell, Aileen, Eileen
    Henricum, Henricus = Henry
    Henrietta = Henrietta or Harriet
    Hereweccus, Herveius = Henry
    Hieremias = Jeremiah
    Honorah = Nora, Norah, (Jane, Jean, Joan!)
    Honoria = Honour, Honor
    Hugo = Hugh
    Isabella = Isabel
    Ioannes, Joannes, Joannis, Johannes, Johannis = John
    Jacobus = James or Jacob
    Joanna, Johanna = Joan, Jane, Jeanne, Jeanette, Joanne, Sinead, Siobhan
    Johanna = Jane, Joan, Jean and Honora
    Josephum = Joseph
    Josias = Josiah
    Laurencia, Laurencius, Laurentium = Laurence, Lawrence
    Lucas = Luke
    Ludovicus, Lodovicus = Lewis, Louis
    Malachias = Malachy
    Marcus = Mark, Marcus
    Margareta, Margreta = Margaret
    Margeria = Margery
    Maria = Mary, Maureen, Molly, Marie
    Maria Anna = Mary Ann, Marian, Marianne
    Mariana = Marion
    Martinus = Martin
    Mathaeus, Mattheus, Mathias, Matthias = Matthew
    Matilda, Matildis, Matillis = Matilda, Maud
    Mauricius, Meuricius = Maurice
    Michaelem = Michael
    Milo = Miles
    Moyses = Moses
    Muriella, Miriela, Mirielda = Muriel
    Oliva = Olive
    Patricius, Patritius = Patrick
    Petrus = Peter
    Philippa, Philippe = Philip
    Radulfus, Radulphus = Ralph
    Randolphus = Randal, Randolph
    Reginaldus = Reynold
    Reimundus = Raymond
    Ricardus = Richard, Dick
    Rugerius = Roger, Rory
    Samuelem = Samuel
    Stephanus = Stephen
    Theodoricus = Theodore, Derek
    Thomasum = Thomas
    Timotheus = Timothy
    Tobias = Toby
    Vincencius = Vincent
    Willelmus, Guillelmus= William

    Some Changes in Names seen in Registers

    In Latin, the spelling of a name will change depending on whether it is simply the name itself, or whether it is the name of a parent or a bride.
    If you have two names in a register which to your mind should be spelled exactly the same way and they are not – then this is because the rules of Latin and the way that names should be spelled tell us whether it is the child or parent who is being named.
    The name changes to indicate “son/daughter of, bride of.”
    The first name is spelled as it should be and the way the parents first name ends.

    Any name ending in “us” used as the father's name should end in “i”
    This combination of endings is constant for any male name that ends in ”us” e.g. Anthonius, Bartolomaeus, Cornelius, Carolus, Edwardus, Franciscus, Gulielmus, Henricus, Josephus, Patricius, Petrus, Stephanus, Timotheus.
    James son of James should read : Jacobus filius Jacobi
    Anthonius, filius Edwardi; (Anthony son of Edward)
    Petrus, filius Stephani; (Peter son of Stephen)
    Josephus, filius Patricii. Joseph son of Patrick
    John son of John becomes Johannes, filius Johannis

    Any name ending in “es” or “is” in the nominative case e.g Johannes, Danielis, Micaelis takes the “is” or can remain the same:
    Danielis filius Micaelis : Daniel son of Michael
    Danielis filius Johannis : Daniel son of John
    Johannes filius Danielis : John son of Daniel

    Names ending in “o” add “nis” to the father or the mother.
    Hugo filius Hugonis : Hugh, son of Hugh

    Names ending in “a” should end in “ae” when it is the father or mother who is mentioned in the records – in most cases with Irish records the “e” is absent when it comes to Mariae.
    This group includes: Anna, Brigitta, Caecilia, Catherina, Elena, Elinora, Hanoria, Honoria, Johanna, Rosa.
    Maria, filia Mariae : Mary, daughter of Mary
    Brigitta, filia Annae : Bridget daughter of Anne
    Honoria, filia Johannae: Honoria daughter of Joan (see name list above Honora = Joan)
    Catherina, filia Elenae : Catherine daughter of Helen.
    Winifred should belong to this group and just becomes Winifreda

    Helen is a name that is rarely seen in parish records that are written in English up to the late 19th century. This name is usually found as Ellen in Irish parish records that are written in Latin

    Marriage can be slightly different: if the name ends in “a” the ending becomes “am”
    Johannes nupsit Annam : John married Anne
    Jacobus nupsit Brigittam : Jacob (James) married Bridget

    Names ending in “ix” should become “icis” in the genitive
    Beatrix filia Beatricis

    There are a few odd ones, namely Thomas, Jeremias, Barnabas, Adamus, which don't fit the rules and can be found in different forms.
    Thoma filius Thomae : Thomas son of Thomas
    Thomas filius Thome : Thomas son of Thomas
    Adamus, filius Ade or Adam : Adam son of Adam

    The name Bridget usually follows the same form in baptismal records as it should in marriage records, i.e. Bridget is often written as Bridgetam in baptismal records whereas it should read Bridgeta

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