• 238 members
Are you a member of the O'Mahony project?
December 8 @ 8:46pm
A "Merry Christmas" season to all of you & a heartfelt "Thank you" to Finbar for the many messages he answers.
December 8 @ 9:14pm
Finbar, How do we contact those we want to reach if they turn off all below Y37 ? After a couple of years we still have only two @ Y67. Also, who do we contact to find out who submitted the FTDNA test kit number? The removal of name & 'most distant ancestor' (mda), must be from the recent EU privacy law. (Just wondering about that, since realizing that many Irish parents used the Irish traditional 'naming' after Grand-fathers, Uncles, etc.) It is amazing how many questions come to mine!
January 22 @ 7:00pm
Pam, Please check the "O'Mahony Society" page on Facebook for Gareth Marney.
Finbar O Mahony
February 13 @ 5:05pm
Yes Madeline. The GDPR regulations require us to ensure that emails are only available on the individual's personal page. Genealogical questions should be directed to the Society Facebook page and FamilyFinder queries are beyond the scope of thhe yDNA project. In thhe past two days I received a mildly irate email from the admin of a kit. The owner was an O Mahony but did not want to participate in "research" The owners of the kits can opt out of notifications below any level (37, 25, 12) and can also ensure that even the administrator does not have Full Access. Kit numbers shown in black rather than blue on the spreadsheet are uncontactable but can only be removed/deleted by the kit holder.
June 6 @ 12:31am
Thank you, Finbarr, I have a few contacts from Gene's Y- results listed, and Greg (Au.) was kind to see that we were able to contact one another. (I will let you know if the results prove favorable. ) Sorry, I have taken so long to answer .... Gene's wife, Dorothy, took a turn for the worse & passed away since I last contacted you. Gene (age 88) drove up from Houston, Tx. to see us, this week. He was pleased with the Y-discoveries and says "Hello" to you .. sending his best wishes. Thank you, for your kindness & guidance along the way.
Maggie Nagy Maggie Nagy
May 20, 2018 @ 10:14pm
Any Mahonys or O'Mahonys in the R-L21 Y-DNA haplogroup?
john mahoney
May 21, 2018 @ 10:06pm
yes..most of us are L21
Maggie Nagy
May 22, 2018 @ 12:18pm
Thanks, John. Good to know.
thomas mahoney
March 30 @ 12:12pm
R-L21.-- we are R-l21 o'mahonys from bandin ireland they immigrated to Kincora Ontario Canada in the mid 1800's then moved to Mid Michigan in the late 1800's for the lumber industries . A lot of - Mahoneys/ Mahonys in Michigan
Erin Garcia Erin Garcia has a question!
February 9 @ 5:54pm
I recently had my brother's test upgraded to 67 markers. Our surname is Murphy, but all our matches say Mahoney. I am trying to figure out if this is a NPE or a variation on the Gaelic name O'Mahoney. Also, will my brother's results get added to your spreadsheet? How does anyone get added to your results?
john mahoney
February 12 @ 8:04am
have you done any SNP testing ?
Finbar O Mahony
February 13 @ 5:21pm
Hello Erin. When you say "all or matches are O Mahonys" can you say how many matches named O Mahony your brother has please? What haplogroup is he? The early Murphy (O Murcu) is found the East coast but spread throughout the South. It has a distinctly different haploroup from the one associated with the main body of the O Mahonys. We have two exceptions named O Mahony/Mahoney or a variant who share an early common ancestor named Murphy. Perhaps the two exceptions could add the Murphy project to the list of "project joins"? I am not at liberty to suggest that to them. If you let me know the halpogroup for your brother we can see what would be the better course of action. Without that information it would be premature to talk about which family was the source of a possible NPE, adoption, fostering leading to a name change or the child of a first marriage taking the name of his stepfather out of gratitude, respect or as a requirement for inheritance.
Erin Garcia
March 8 @ 4:26pm
My brother is L-226. I just upgraded his Y DNA to 111 markers and we have 2 matches at that level. Both a Michael Mahoney from County Cork, Ireland. At the 67 marker level, we have 9 Mahoney matches at a genetic distance of 5 or less. I have been told that halogroup L-226 is from Counties Tipperary, Clare, Limerick & Cork. Does this help?
Erin Garcia
March 8 @ 4:44pm
We are already members of the Murphy project. I just checked and we seem to be the only L-226 in their database.
March 28, 2018 @ 7:17pm
I'm part of the McMahon group. My brother Jerry McMahon and I have discovered that we appear to be part of a sub group of the O'Mahony's. Anxious to find out more about that. My kit # is 658950 and i'm in the R-M269 Haplogroup.
Finbar O Mahony
April 10, 2018 @ 10:34am
Welcome Robert.
September 7, 2018 @ 1:38am
Hello, Robert, I have an e-mail address from my brother's YDNA test match. The person to submit the > Clarence B. Mahoney, J. < name with his earliest known ancestor > James Mahoney ( 1820 - 1846) Woodville, Mississippi, USA. The e-mail of the person submitting the names & dates > < My brother, Eugene (Gene) Powell Willard shows he is 4 step at 59.12%. In other words, we have a genetic match, as well. Also, Frances Van Lier, is friends on my Facebook page & she was a Mahoney (who had McMahon's in her family. She lives in New Zealand. I believe Greg Mahoney knows her. My Facebook page is listed > Madelline Willard Copeland < You will find Frances is listed as "Friend'. (Our Grandfather's name was James.) Hope this helps to lend a bit of info.
Diane Mahoney
December 17 @ 3:39pm
Hi, Robert! My cousin, Patrick Mahoney, did a YDNA test, and he was R-M269, also. The odd thing was that there were more McCarthys then Mahoneys. Only one Mahoney (I think a John Mahoney) was the only one with a R-M269 match. As you may know, the R-M269 goes back to 25,000 years.
Loïc Mairesse Loïc Mairesse has a question!
March 1, 2018 @ 9:23am
Hello, First of all, if you could be tolerant about my english because I'm french ! I recently received my Y-DNA 37. I found 2 matches at 37 markers, with a genetic distance of 4. One of them is Sean O'Mahony. For him, the comparison chart show me a percentage of similarity of 88.06%, at the 8th generation. I would understand what is the most important: markers, genetic distance, percentage ? To explain my target with this Y test: I'm looking for the father (unknowm) of my g-g-g-grand-father, born in 1816, in France. The matches I found are both irish ! Between this unknown father and me, there are actually 6 generation. If I have to select markers which match with me, is it better to research low genetic distance or high percentage ? In this kind of test, at what level a percentage become meaningful ? Thank you for any help, Loïc Mairesse
Maggie Nagy
March 2, 2018 @ 4:54pm
There were many Mahony/O'Mahonys Soldiers from Kerry and Cork living in France around 1790's. I would go up to 67 markers
Loïc Mairesse
March 3, 2018 @ 5:40am
Hello, Thanks for this track.Do you know any register or books about this migration ? About a 67 markers test, I first asked for a SNP package test, to show in what specific haplogroup I am.
September 7, 2018 @ 1:43am
Dr. Finbar O' Mahony may be able to answer your questions about the markers & the SNP's. Welcome to the O'Mahony Clan.
December 8 @ 8:59pm
Loic, Please see: "The O' Mahony Society" page on Facebook. There is Dominique from France, who may be able to help you with your Irish - French ancestry connection. (He posted the photo of portraits of 2 gentlemen who were Counts, there.)
Diane Mahoney Diane Mahoney
October 23, 2018 @ 7:33pm
Hi, O'Mahony Society members! I VERY recently learned that my 2 gr grandfather, Denis Mahony & 2 gr grandmother, Margaret Grimes were md. Feb. 7, 1839 in Schull East, Cork, IRE in the parish of Cork & Ross parish. Their 1st child, Jeremiah, was Christened May 3, 1840. Shortly after, they left Schull and all three settled in Auburn, Cayuga, NY abt. 1844 when my gr grandfather, Patrick, was born. I was surprised reviewing the church records that very few women were sponsors for marriage and baptism. About 98% of the sponsors were men. Also, my male Mahoney cousin did a Y-DNA test which seems to indicate that we were originally McCarthy clan on father to father DNA. Maybe our distant grandfather McCarthy was adopted to a Mahoney family OR we may have a naughty distant grandmother! I have not contacted the Y-DNA O'Mahony Society in regard to the McCarthy mystery if they know of the history. Thank you SO MUCH to contact me, and hope to hear from you soon. Regards, Diane in Baltimore, MD
Diane Mahoney
October 23, 2018 @ 7:34pm
I forgot to ask if anyone on this Society has a Schull link. Diane
Stephen Mahoney Stephen Mahoney has a question!
October 15, 2018 @ 7:21pm
I recently took the Ancestry DNA test for comparison. It shows no connections to County Cork back to the 5th through 8th cousin (roughly equating to the 5th-8th grandfather). Is it possible my ancestors were already here in the US by that time? Earliest Mahoney in Maryland, US I have found was Timothy Mahoney, circa 1680. He would have been the 9th grandfather (IF he is an ancestor - not proven yet).
Cian O Mahony Cian O Mahony has a question!
June 17, 2017 @ 5:58am
What would be the benefits of going with one of the two more expensive yDNA tests? Thanks, Cian O'Mahony
Cian O Mahony
January 3, 2018 @ 3:24am
Hi Eugene,
Cian O Mahony
January 3, 2018 @ 3:28am
not much of a tree. Earliest known ancestor is Patrick O’Mahony born c1878 son of John. His marriage cert says he was born in Dunmanway district but we suspect nearer Bandon or towards Ballydehob. No Kerry links at all. I don’t have Family Finder. My email address is As I could easily have missed your message - didn’t get any notification.
September 7, 2018 @ 1:54am
Thanks Cian, I am sorry that I have not been back to this page in quiet awhile. We have you in our test results at marker 12, as we do Dr. Finbar O'Mahony. However, we share 3 other surnames with him in his Family Finder. You are on our list so we will stay in touch. Maybe on the "O' Mahony Society" page. Thank You, for your reply
September 12, 2018 @ 6:21pm
Cian, Our Kit # is 298068 (Willard Kit) 1850's surname change > to Willard.
June 18, 2018 @ 3:53pm
Hello Fellow Mahoney's, O'Mahony's and the rest of the clan!
June 18, 2018 @ 4:00pm
Okay, that one got away from me. My oldest known ancestor is Jeremiah Mahoney born in 1763 and died in 1833. We think around Enniskeane, but not for sure. His first wife Katherine Lyons, born in 1770 and died in 1799. The only surviving child was John (b. 1790 and d 1859 in Canada), my great, great Grandfather, who immigrated to Prince Edward Island around 1827. Jeremiah later married Margret Hannigan and had many children. Any Tips?
September 7, 2018 @ 2:22am
Who knows "Toni Mahoney"? His name is on an e-mail address, along with an ancestor he submitted .. a genetic match to Eugene Powell Willard > kit # 298068.
September 12, 2018 @ 5:39pm
Daniel, Our FTDNA shows genetic match to: John Francis O' Mahony (4 at 83.49%). Most distant ancestor > Jeremiah Mahoney - 1870 - Enskeane, Kerry, Ireland, which may be > Enniiskeane. (This was submitted by John Mahoney - UK.) We often find the name Cornelius or Jeremiah with the name of James in Mahoney family search, as well as Robert & Francis. Did John & Mary (Higgins) Mahoney have other sons?
September 12, 2018 @ 5:53pm
Daniel, Our second person of interest is > Raphael Francis O. Mahony > James O' Mahoney - B: 1833 UK & D: 1910 - Aust. James was the son of >> Florence O' Mahony. (This was shown by FTDNA as 4 step @ 57.86) (Submitted by Toni ) Your FF Tree on FTDNA shows: Your Jeremiah Mahoney married to Margaret Hannigan & you noted "they had many children>) If we have a match .. it may be through Jeremiah's line. Our Grandfather: James M. Willard (HIs middle name was 'Michael' but one death record shows his middle name as "MARNEY" … He was born between 1853 & 1860. Lived in Texas, but died & is buried in Houma, Terrebone, La. If this helps, Our Dad was: Harry Francis / & brothers: Robert & Thomas "Tommy" & one girl Edith. I am taking care of correspondence for my older brother: Eugene Powell Willard - ftdna - KIT # 298068. (Gene was 88 on Sept 9.) The name was changed to "Willard" about the time the arrived in US.
September 11, 2018 @ 1:39pm
We are researching information on > Cornelius O' Mahony < Born: 1840 in Macroom, Cork, Ireland & Died: Melbourne, Australia. He was a teacher. We are looking for name of his parents / siblings / wife & children. If anyone knows of family, please let us know. Thank you, Happy Ancestoring!