Author Topic: MRCA - why sometimes one and sometimes a couple  (Read 354 times)

Offline familydar

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MRCA - why sometimes one and sometimes a couple
« on: Sunday 11 February 18 16:31 GMT (UK) »
By couple I mean mother and father, not two unrelated people which would be a double relationship.

A*y hints for my dna kit can suggest a solitary mrca even when both halves of the couple are present in both trees.  Generally the predicted relationship is at least two degrees more distant than the paper trail suggests, so perhaps the real mrca is a grandparent of the suggested person, and further back than our trees go.  If indeed the case, then this implies that one or both of us have an error in our trees.

I'm guessing that the algorithm used is managing to rule out the spouse, but how, when there are no matches in common with the one it has picked?


Jane :-)
ALLEN
BARR, BARRATT, BERRY, BRADLEY,BRAMLEY,BRISTOW,BROWN,BUGBIRD,BUTLER
CAIN,CARR,CHAPMAN,CHARLES,CH*LTON,CHESTER,COCKETT
COLLASON,COLLYER,CORKERY
DARLING, DENYER,DICKERSON,DOLLING,DURBAN
FARMER,FURNELL
GIBSON,GILES,GROOMBRIDGE
HALL,HAMBIDGE,HARMES,HART,HICKS,HILL,HOLLOWAY
JACKSON
K*AT*S
LANCASTER,LINTON
MCDONALD,MCFADEN,MEARS,MILLARD
NICOLAS,NOAK,NORTH
PARFIT,PORTER
RIPPINGALE,ROBINS
SEARLE,SPENCER,STEDHAM
TYLER,TILLY,TUCKWELL
WADE,WAGER,WALKER,WATSON,WEBB,WITHRINGTON,WOOD

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Offline hurworth

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Re: MRCA - why sometimes one and sometimes a couple
« Reply #1 on: Sunday 11 February 18 17:15 GMT (UK) »
Are the details (DOB and place) for these people exactly the same on both trees?

I've noticed Ancestry hasn't picked up on several MRCAs and I'm not sure why.

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Offline familydar

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Re: MRCA - why sometimes one and sometimes a couple
« Reply #2 on: Sunday 11 February 18 17:24 GMT (UK) »
Yes exact matching on date and very specific location. 

ALLEN
BARR, BARRATT, BERRY, BRADLEY,BRAMLEY,BRISTOW,BROWN,BUGBIRD,BUTLER
CAIN,CARR,CHAPMAN,CHARLES,CH*LTON,CHESTER,COCKETT
COLLASON,COLLYER,CORKERY
DARLING, DENYER,DICKERSON,DOLLING,DURBAN
FARMER,FURNELL
GIBSON,GILES,GROOMBRIDGE
HALL,HAMBIDGE,HARMES,HART,HICKS,HILL,HOLLOWAY
JACKSON
K*AT*S
LANCASTER,LINTON
MCDONALD,MCFADEN,MEARS,MILLARD
NICOLAS,NOAK,NORTH
PARFIT,PORTER
RIPPINGALE,ROBINS
SEARLE,SPENCER,STEDHAM
TYLER,TILLY,TUCKWELL
WADE,WAGER,WALKER,WATSON,WEBB,WITHRINGTON,WOOD