1st cousins and 3rd cousins

[londonscorpion]

I have two people who are related first as husband and wife, then as 1st cousins, and then again as 3rd cousins.  As 3rd cousins there are two routes back to the common ancestor. The generations run from 1680 to 1850. If all the sources that link these two people through the generations are correct, would these two cousin relationships add weight to the connections that have been made. 

[Mike in Cumbria]

What do you mean by "add weight"?

[londonscorpion]

Add more certainty that the connections are right. For example, on old bmd records you may only have the year and so sometimes it's a bit of a guess

[KGarrad]

BMD records (that is Birth, Marriage and Death) are Civil Registration, and always show the full dates on the certificates.
Parish Records (CMB, or Christenings, Marriages and Burials) will also show dates.

Not sure where you have seen just a year?

[goldie61]

Sometimes I have seen 'just a year' in very old parish registers K - usually where pieces of the page are missing due to damp, mice or just torn, and so all you can glean is an approximation of possibly the month, and usually can see which year it was.
Not sure if this is what the poster meant though.

[majm]

I have two people who are related first as husband and wife, then as 1st cousins, and then again as 3rd cousins.  As 3rd cousins there are two routes back to the common ancestor. The generations run from 1680 to 1850. If all the sources that link these two people through the generations are correct, would these two cousin relationships add weight to the connections that have been made.

If two people are husband and wife, then that is the significant fact confirmed with the marriage registration, and featured on the family tree chart.  The cousin relationships are consanguineous relationships and there are far far more cousin relations between people who are not married to each other.    Currently, some states in the US continue to have laws that would restrict first cousins from marrying each other. 

Like others replying on this thread,  I wonder what our OP refers to when using the expression :

would these two cousin relationships add weight to the connections that have been made

JM

[mrcakey]

How can they be 1st cousins AND 3rd cousins?

[LizzieL]

How can they be 1st cousins AND 3rd cousins?

Through a number of cousin marriages, I have someone on my tree who is a 3rd cousin to me, also a fifth cousin and a fifth cousin once removed.

I wonder what sort of match that would show up on a DNA  test

[majm]

For example ... 1st cousins share at least one grandparent; 3rd cousins share at least one great grandparent.

And  don't forget that 1st cousins can share all four grandparents.... DNA could show them as siblings ...

JM