RootsChat.Com

General => Ancestral Family Tree DNA Testing => Topic started by: dicko99 on Monday 06 January 20 14:03 GMT (UK)

Title: Ancestry common ancestor anomaly
Post by: dicko99 on Monday 06 January 20 14:03 GMT (UK)

I have an Ancestry.com common ancestor which I just cannot work out. He's pretty distant at only 7cM across 1 segment but I've managed to link others at a similar level...

For this one, our common ancestor is suppose to be my 4 x Great grandmother Sarah Roberts. In my tree she's born in Suffolk and married to James Layzell. The link to my common ancestor is via serveral non-DNA trees that list her has born in Woolwich and married to Henry Tyer. The dates overlap so I don't think it's a case of her being widowed and remarrying so what gives? Is this just a coincidental DNA match or is one of our trees very wrong?

R.

Title: Re: Ancestry common ancestor anomaly
Post by: Gadget on Monday 06 January 20 14:06 GMT (UK)

Have you clicked on the Evaluate tab when you bring up the link?  Amazon seems to try various trees on their site when they don't find a common ancestor between you and the match.

Title: Re: Ancestry common ancestor anomaly
Post by: dicko99 on Monday 06 January 20 14:25 GMT (UK)

Quote from: Gadget on Monday 06 January 20 14:06 GMT (UK)

Have you clicked on the Evaluate tab when you bring up the link?  Amazon seems to try various trees on their site when they don't find a common ancestor between you and the match.

Sorry, I didn't explain it very well. The Evaluate list is where I can see all the other trees with Sarah Roberts of Woolwich.

Title: Re: Ancestry common ancestor anomaly
Post by: Gadget on Monday 06 January 20 15:51 GMT (UK)

Have a read through this thread:

https://www.rootschat.com/forum/index.php?topic=822707.0

There are lots of anomalies identified.  I have some that Ancestry have identified as having a common ancestor but I can see no connection whatsoever. They just seem to search other trees without any real logic  :-\

This is especially the case with low cMs. I think my oddities are in the 6-9cM range.


Gadget

Title: Re: Ancestry common ancestor anomaly
Post by: Mowsehowse on Tuesday 24 December 24 18:37 GMT (UK)

Could someone remind me how to locate common ancestors from my Ancestry DNA match list please. Not a marvellous time to make this enquiry I do realise. Many thanks, Merry Christmas. :)

Title: Re: Ancestry common ancestor anomaly
Post by: Lambendsor (aka IGS) on Tuesday 24 December 24 18:49 GMT (UK)

It should just appear on your DNA matches page, but you'll only be able to see who the common ancestors are if you have an active/paid subscription.

Title: Re: Ancestry common ancestor anomaly
Post by: Mowsehowse on Tuesday 24 December 24 19:30 GMT (UK)

Thanks very much. I appreciate your time.

Title: Re: Ancestry common ancestor anomaly
Post by: Biggles50 on Tuesday 24 December 24 20:54 GMT (UK)

Assuming you have a Subscription.

DNA > Matches > Filters > Common Ancestors

Is the easiest way.

Title: Re: Ancestry common ancestor anomaly
Post by: Mowsehowse on Tuesday 24 December 24 22:25 GMT (UK)

Brilliant, thank you Biggles.