Tnx Cliff: Excellent advice on the DNA testing. Have to admit ignorance on my own Daly/O'Dalaigh from Cork Y-DNA status, but our Reddick/R320 experience supports your County Cork advice. Richard Daly Reddick ------------------------------ Message: 3 Date: Tue, 25 Aug 2009 10:17:42 -0500 From: "Cliff. Johnston" <moments-in-time@comcast.net> Subject: Re: [CO CORK] DNA question To: <countycork@rootsweb.com>, <CountyCork-L@rootsweb.com> Message-ID: <007001ca2597$32c6a8d0$0202a8c0@Annandale> Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Pat, Both sons carry your father's Y-DNA; accordingly, unless the male line has been interupted, they will also have the same Y-DNA as your great grandfather. Unfortunately there is no way to connect back to your great grandfather other than a paper trail. Y-DNA testing will only show relationships between people who have been tested for their Y-DNA. One could get a Y-DNA sample of one's great grandfather if one knew where he was buried, but most people do not go this route unless the circumstances are extra-ordinary. Of course this means that Y-DNA can and is being used by 10's of thousands of people to find what I refer to as "Y-DNA Cousins". Now here is where the science meets statistics meets art. How close 2 or more Y-DNA Cousins are to each other when they have no known paper trail is a wee bit of a SWAG. For most people considering taking the Y-DNA test let me recommend strongly the 67-markers test. Why? Experience with my Johnstons in Poldean group has taught me that. Let's take a look at the various tests and what we can learn from them. 12-markers test: the most basic test being marketed; used by National Geographic in their human genome project in an attempt to explain the migration of mankind from his inception to today. If one is lucky, one will find out which major haplogroup one belongs to and little else - many do not though. 25-markers test: a waste of time and money, in my opinion. It adds little that is really useful to the 12-markers test. 37-markers test: this test helps in defining close relationships within the past few hundred years. For example, in our Johnstons in Poldean group we've been able to help 2 pairs of Cousins to get together and cooperatively work in finding their Most Recent Common Ancestor. Both pairs had a difference of only 1 mutation, but their MRCAs were from different generations, ie: one pair found their MRCA in the 1750's while the other pair found their MRCA in the 1850's. On the other hand one of our Cousins had 2 of his grandsons tested. Each differed by 1 mutation from his results, and each was at a different locus (marker). All of this illustrates the well-known fact that mutations occur randomly. We never know when they will happen or where. 67-markers test: in most cases, other than when 2 or more Cousins are known to be from the same family line, this is the test that should be taken. The loci, or markers, #38-67 are most useful in determining direct family lines. For a year or so in our Johnstons in Poldean group we relied primarily on the 37-markers tests, but when a handful of Cousins had their tests upgraded to 67 markers it became evident that the upgrade was invaluable as it indicated a close relationship between 2 Cousins who thought that they were from different family lines, and 2 other Cousins who thought they were from the same family line turned out to be from totally different lines. Now that we've had 33 of our Cousins upgrade to 67-markers we are "true believers" in getting the 67-markers test done first. I hope that this helps you a wee bit :-) Good hunting, Cliff. Johnston "May the best you've ever seen, Be the worst you'll ever see;" from A Scots Toast by Allan Ramsay ----- Original Message ----- From: "pat lewis" <carmodyp@bellsouth.net> To: <CountyCork-L@rootsweb.com> Sent: Monday, August 24, 2009 10:41 PM Subject: [CO CORK] DNA question >I have no living male members except my sons, Father died in 1966, brother in 1987........... Could either son have the DNA test and what would it show, how could I make any connection to great grandfather who died 1905 or any living relative that I know nothing about? > Check out the Ireland GenWeb County Cork Website at: > http://www.rootsweb.com/~irlcor/ > It is a good place to find information related to your family research. > ------------------------------- > > Today's Topics: > >   1. Re: COUNTYCORK Digest, Vol 4, Issue 99 (Janet) >   2. Re: FAMILY TREE DNA (Phyllis Pawloski) >   3. Re: DNA question (Cliff. Johnston) >   4. Re: DNA question (Cliff. Johnston) >   5. Re: DNA question (Cliff. Johnston) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 25 Aug 2009 04:56:04 -0400 > From: "Janet" <carlw@gwi.net> > Subject: Re: [CO  CORK] COUNTYCORK Digest, Vol 4, Issue 99 > To: <countycork@rootsweb.com> > Message-ID: <60222803FA4D44709C8EF06AF35FE027@janetPC> > Content-Type: text/plain; format=flowed; charset="iso-8859-1"; >        reply-type=original > > Sorry to be so slow in returning your email.  My g grandmother was Hannah Mahoney.  She m Edmond McCarthy in Lynn MA 9 Sep 1877.  She was b Ireland 1849 according to her death record.  She d Lynn 30 Aug 1895.  She was previously m to Eugene Mahoney and I know nothing about him.  She had 2 children with him:  Margaret b 1872 and Eugene b 1873.  I think they were brought up as McCarthys.  Hannah's father was Timothy Mahoney and mother was Ellen.  I know nothing more about them and hope to find their parents. > Janet McCarthy Weymouth > > ----- Original Message ----- > From: <JE301@aol.com> > To: <countycork@rootsweb.com> > Sent: Monday, August 17, 2009 7:29 PM > Subject: Re: [CO CORK] COUNTYCORK Digest, Vol 4, Issue 99 > >> Jan, I am looking for people who have or would like to share Mahoney/Mahonys. My maiden name was Mahoney and I live in NY. what are your  Mahoneys? Mine went to Ontario in aobut 1840--cornelius, his wife, Frances Regan  and their children--John, Jeremiah, Florance--male-- Mary and Susanna. Any connection? and I believe they were from Kilmoe Parish in southern  Cork >> Jean Mahoney Eustis >> >> >> In a message dated 8/17/2009 7:23:56 P.M. Eastern Daylight Time, >> carlw@gwi.net writes: >> >>...but it  may well be the same name.  I have mahoneys and they go back to O'Mahoney.  My Weymouths are listed as Waymouth/Wamoth/etc.  It  may well lead to a solution rather than a complication.  jan mccarthy  weymouth >> >> ----- Original Message ----- >> From: "Randy"  <ranny9@cox.net> >> To: <countycork@rootsweb.com> >> Sent: Monday,  August 17, 2009 6:55 PM >> Subject: Re: [CO CORK] COUNTYCORK Digest, Vol 4,  Issue 99 >> From: "Priscilla Haines"  <phaines@digis.net> >>> Date: August 16, 2009 9:20:21 PM  EDT >>> To: <countycork@rootsweb.com> >>> Subject: Re:  [CO CORK] Anyone researching O'Guinidhe: O'Guin/O'Gwin/O'Gwyn? >>>> >>>> >>>> My son-in-law is  Guinn.  Same name???  priscilla >>> >>> I don't think so.  I'm trying to avoid all the Guinn/Guins as that will just complicate  things more. >>> >>> Randy O'Guin, USA >>>>>  ------------------------------- >> >> Check out the Ireland GenWeb County Cork Website at: >> http://www.rootsweb.com/~irlcor/ >> It is a good place to find information  related to your family research. >> ------------------------------- >>------------------------------ > > Message: 2 > Date: Tue, 25 Aug 2009 08:10:07 -0400 > From: "Phyllis Pawloski" <pppawloski1@msn.com> > Subject: Re: [CO  CORK] FAMILY TREE DNA > To: <countycork@rootsweb.com> > Message-ID: <COL123-DS119706A845917447467ACCE0F80@phx.gbl> > Content-Type: text/plain;       charset="iso-8859-1" > > At my request, my cousin submitted his DNA for the Crowley Clan DNA project.  This project has produced considerable success.  I recommend it. > Phyllis P >  ----- Original Message ----- >  From: JE301@aol.com<mailto:JE301@aol.com> >  To: countycork@rootsweb.com<mailto:countycork@rootsweb.com> >  Sent: Monday, August 24, 2009 1:43 PM >  Subject: Re: [CO CORK] FAMILY TREE DNA > >  Monica, I did my Mahoney DNA quite a while ago and did get 6 or 8  matches. >   Have you found it online and  checked the list? > Jean M.Eustis > >