Help with DNA match (MCDOWELL's Ballymartin)

[unilove18]

Hey everyone, Hopefully someone could help me here. I have recently got a DNA match on ancestry with this person being labelled as a 2nd cousin. So to me that means, they would be a grandchild of one of my Grandmothers siblings. With us sharing the same great grandparents. Now, according to this DNA match her Grandmother has the same name as mine, date of birth the same, only with a different year!! And then her great grandfather listed as the same name as mine! (Proof of name being in her marriage cert)....NOT PROOF THEY ARE THE SAME PEOPLE.
I have gone 2 generations back and although there is ones with the same names, the dates just dont allow for this matches grandmother to be born with the date they have. Now i obviously now her grandmother isnt mine, as the DNA match wouldnt be a 2nd cousin. But i just cant seem to find the link here.

If any one would be willing to help me i can forward all the information i have. This DNA match's grandmother has deceased! So no issue there.

Thank you

[brigidmac]

2nd cousin level is not necessarily 2nd cousin could be half first cousin so sharing 1 grandparent rather than 2 great grandparents

If your match has taken the date from one source and you have the date from another it could still be the same person .
Which records do you both have . ?

Have you looked at the shared matches you have with them .?

If this hypothesis is  correct they will all be connected to this grandmother but not to her husband and will not connect to your bio grandfather

[aghadowey]

DNA relationships are merely estimates but cannot really be exact unless very closely related. Use DNA Painter to get a better idea of other possibilities-
https://dnapainter.com/tools/sharedcmv4

[unilove18]

Thanks for both replying.
Yes that's why i went back a few generations to follow her names that she has. But her names are my names, and my direct links. So for example there isn't 2 kids in each generation with the same name. So i am baffled!

There is actually no records connecting us just the names. But the date of birth is throwing me slightly of our grandmothers, all thats different is the year. However i cannot find a birth record at groni for her grandmother.

So my grandmother was Sarah McDowell born 28th sept 1899
Her grandmother was Sarah McDowell born 28th sept 1909 ( according to her marriage) Cannot find this birth.

Both their fathers are William McDowell

So with the time frame of 1909, and the name sarah, and fathers name William. I can also my direct links.

So if the dna match was off a little would it be possible that her grandmother is infact my grandmother??

Sorry for being so confusing. Im confused myself lol

Thanks

[unilove18]

All her shared matches i can account for and have been in touch with.
I Share 214cm with her

[Ruskie]

If the only difference is in the year and all other details are the same, it sounds like she is the same woman. One of you could easily have the wrong year.

Do you have your grandmother’s birth certificate?

Also keep in mind that there are many inaccuracies in many trees, so if you are certain your research is correct and the other person has some information that doesn’t tally with yours, then it is quite possible they are wrong.

I’ve read of many instances where someone’s ancestor celebrated their birthday on the wrong date, or claimed to be a year older or younger than they were - nothing untoward about it, but mistakes can happen.

[unilove18]

Yes i have my grandmothers birth certificate. However im not saying my tree is 100% i could have missed a child along the way. She can only go up to her great grandfather where as i have researched right back to my 3 x great grandfather. But i assume thats cause she cant find her grandmothers birth. Only marriage. So because i have the extended tree i was trying to place her but its not possible. Only thing i can think of is, that i have maybe missed a child that my 3 x great grandfather has had? I was pretty sure i had them all. But thats the only place possible where i branch could start, for her line to begin.

I know ancestry dna is not 100% but i think if this match was my half 1st cousin the dna would be closer??

[aghadowey]

Exactly how many centimorgans do you and this match share?

[unilove18]

i share 214cm with this match