How could a 6th cousin not match?

[Gadget]

Somebody should compile all these useful tips, hints and advice into a single document. Perhaps I'll do it myself when I've found my three remaining great great grandparents.

Martin

I started but got side tracked by new matches 

[sugarfizzle]

Somebody should compile all these useful tips, hints and advice into a single document. Perhaps I'll do it myself when I've found my three remaining great great grandparents.

Martin

Not expecting it any time soon then, Martin!

I do have a list of useful DNA links to refer to, I'll start a new topic

Regards Margaret

[Mart 'n' Al]

We should call you St Margaret but you would probably be confused with the station between Richmond and Twickenham.

Martin

[sugarfizzle]

For comparison.

Several descendants of my 2G grandparents have had DNA testing.

Out of the 3rd cousins, one shares 6.2 cM across 1 segment, nearly off the radar.
One shares 63 cMs across 3 segments
Another shares 153 across 7, the only one predicted by ancestry to be a 3rd cousin.

The next generations, 3rd cousins once or twice removed, share 34/3, 28/2, 17/1 etc.

Any children of the first mentioned match, 6.2/1, who are also 3rd cousins once removed, will share little or no DNA with me.

Regards Margaret

[sugarfizzle]

Another match this morning from the same line as previous post, who is a 3rd cousin twice removed, 58 cMs across 4 segments.

My cousin shares no DNA at all with him. So the DNA has disappeared entirely within relatively few generations, much less than 6th cousins.

Regards Margaret

[LizzieL]

GEDmatch still processing but I've got several hundreds of matches already .... can't believe I've got so many relatives.

[AlanBoyd]

According to information at Ancestry the probability of a shared match with a 6th cousin is only 11%.

This is in a pop-up window so I can’t give a direct link, but if you go to the Ancestry DNA home page then click on the ? symbol at the top right hand corner of the DNA matches box then choose Should other family members get tested? you can find this in Table 1. Table 2 is also very useful.

[LizzieL]

Have had message from my 6th cousin, he's not surprised we don't match either. But he is a match for my 1C1R with same surname, and he can see I'm at the top of that cousin's list, so that is reassuring.