Irish Name Variations

After spending a few years looking at catholic parish records in both County Mayo and South Bend, Indiana I have come to a few conclusions. First, the majority of the parish records use the Latin versions of the given name, but how they spell them varies widely. Many parish priests, especially in the County Mayo records appear to spell the given, surname and townlands phonetically in many records. They often use abbreviations I have never seen before and they may refer to the same person many different ways in the same parish records. For example, in the Bekan Roman Catholic Parish records of County Mayo, John Brennan and Catherine Slayne are referred to as John and Catherine, John and Kate, John and Kitty, Joannis and Catharine, Joannis and Catharina, and Jno and Cath. To make things even more confusing the Latin "J" was written as "I" in many records. You may see Ioannes in place of John. I have not seen a lot of nicknames used in County Mayo records, but a lot of our ancestors are known by their nicknames like Kitty, Biddy, Inez and Winnie, so I have included them with this table. The table is by no means complete, but it encompasses the given names I have seen most often in the microfilm.

 
Given Name
Latin Name
Nicknames & Abbreviations
Albert
Albertus
Al, Bert
Alfred
Alfredus
Al,Fred
Anthony
Antonius
Anty, Tony
Arthur
Arturus, Arcturus
Art
Austin
Augustinus
Ann
Anna
Annie, Nan, Nana
Agnes
Agna
Inez
Bertram
Bertrandus
Bernard
Bernardus
Bernie, Barney
Bridget
Brigida, Brigitta
Biddy, Biddie Delia, Bridie, Brgt, Bt
Catherine, Katherine
Catharina, Katharina
Cath, Kate, Cathy, Kathy, Katy, Cat, Kit, Kittie, Trina
Charles
Carolus, Carolum
Chuck, Charlie, Chas
Christopher
Christophorus
Chris, Topher
Daniel
Danielis, Danielus, Daniele
Dan, Danny, Dan'l
Cecilia
Celia, Cissy
Dominick
Dominicius, Dominicus
Dom
Edmund, Edmond
Edmundus
Ed
Edward
Edwardus, Edvardus
Ed, Eddie
Ellen
Ellena, Elena
Nellie
Elizabeth
Elizabetha
Beth, Betty, Eliza, Bessy,Bitsy, Lizzie
Eleanor, Ellenor
Eleanora, Elinora, Ellenora
Ellie, Lenora, Nora, Ellen
Francis
Franciscus -male
Frank
Frances
Francisca - female
Fanny, Cissy
George
Georgius
Helen
Helena
Hannah
Hannoria, Hannor, Hannora
Nan, Nanny
Hugh
Hugo
Henry
Henricus, Henricum
Hank, Harry, Hal
Honor
Honoria, Onoria
James
Jacobus
Jimmy, Jas
John, Johnathon
Joannes, Joannis, Ioannis
Jno
Joseph
Josephius, Josephus
Joey, Joe, Jos
Louis, Lewis
Ludovicus, Aloysius
Lou
Luke
Lucas
Lawrence
Lawrence
Laurentius
Larry, Lonny
Letitia
Lettie, Tish
Loretta
Etta, Lottie
Marie
Maria
Mary
Maria
Molly, May, Mollie
Margaret
Margareta
Maggie, Peggy, Meg, Margt, Madge
Mallachy
Malachias
Mal
Martin
Martinus
Marty
Mathew
Matheus, Mathias, Matthias
Matt
Michael
Michaelus, Michaelem
Mike, Mick, Mich'l, M'l
Mark
Marcus
Nora
Honorah
Owen
Oenus, Owinus
Olive
Oliva
Ollie, Libby
Peter
Petrus
Pete
Patrick
Patricius, Patritius
Pat, Pady, Patt, Pat'k
Phillip
Phillipa, Phillippe, Phillipus
Phil
Phelim
Felmeus
Richard
Ricardus, Richardus
Rick, Ricky, Dick, Rid, Ric'd
Robert
Robertus
Bob, Bobby, Robbie, Rob, Dob
Roger
Rogerius, Rugerius, Rogerus
Rod
Sarah
Sarra
Sadie, Sal
Thomas
Thomasum, Tomas
Tom, Thos
Timothy
Timotheus
Tim
William
Gulielmus, Guglielmus, Guilhelmus
Wil, Willie