Generational disparity (descent) of related royal couples

Without going back too far (eg, no cousins of the twelfth degree, however

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many times removed), what is the most "removed" a known royal has been from
his or her spouse in terms of a cousin relationship? e.g., Prince X marries

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The "Without going back too far" bit makes it a bit difficult to know
exactly what you're looking for. Am I too much of the nerdy scientist,
if I resume that what you really want is the highest possible value on
a "removal/degree" index ot the closest available line of common
descent?

Charles von Hamm...

Possibly. Of course, degrees and indexes flood my memory with bad visions of
university calculus! ;-)

That is, you take the number of times that the relationship is
"removed", and divide it bu the degree of lateral relation, starting
with siblings as 1, cousins as 2 second cousins as 3, and so on. A
couple of second cousins once removed would thus have a removal/degree
index of 0.33, and a couple of fifth cousins twice removed would have
the same index.

Charles von Hamm...

Sounds fairly simple now... I gather that a higher removal/degree index
would indicate greater generational disparity.

Charles von Hamm...

Charles von Hamm

Jan B=F6hme

Princess Y, they are 6th cousins, 4 times removed. Mainly, I'm interested in
the closest relationship, but other relationships would be fine.

WmAddams...

In 1949 Prince Joao of Brazil married an Egyptian. They're probably not related
very closely. :)

Charles von Hamm...

Can a common ancestor be found for both of them with the closer descent at
15 generations or less?

Also, what is the greatest disparity in *agnatic* descent between two
members of the same house who were alive at the same time?

WmAddams...

The current Count of Paris and the current Duke of Braganza, most likely. If
what you want is a married couple, then the parents of the current Duke of
Braganza should do just fine.

Charles von Hamm...

mjcar...

Try Prince Albert I of Monaco and his first wife, Lady Mary
Douglas-Hamilton.

Charles von Hamm...

Roglo, however reliable it may be, gives the greatest disparity at 16th
cousins removed 7 times in their descent from Guillaume Comtour d'Apchon and
Mahaut d'Auvergne. Mary is 24 generations down and Albert is 17. Still, that
is far enough to be of little interest. They are also double 8th cousins
removed twice, once with Mary at the 9th generation of descent and once with
Albert at the 9th generation of descent. Closer, but still a stretch.

Charles von Hamm

mjcar...

Thanks for clarifying Charles - it makes sense to me now: it is the
disparity in the generations bewteen the partners that is of interest.
I shall put my thinking cap on, but expect it will be hard to beat the
Plantagenet instance.

WmAddams...

Try this one:

Giulio Pignatelli, Prince of Noia (d. 1658), married three times (Roglo only
shows two of his marriages). By his first wife he had Fabrizio who had Ettore
who had Andrea Fabrizio who had Giovanna. By his third wife he had Nicola who
married Giovanna. So Nicola married his half-brother's
great-great-granddaughter.

Guy Stair Sainty...

Thus safely securing a a major inheritance for the Pignatelli family,
which came to them from his first wife.

mjcar...

For the first, how about Henry III of Castile and Catherine of
Lancaster; although they had a closer relationship via a shared descent
from Alfonso XI (both great grandchildren = second cousins), he was
10th in descent from Henry II of England, while she was 7th in descent,
making them 6th cousins three times removed?

Do you know who their common agnatic Bourbon ancestor is and the descent of
each from him?

Charles von Hamm

Charles von Hamm...

King William III of the Netherlands and Princess Emma of Waldeck and Pyrmont
come close... They are second cousins twice removed through Duke Frederick
II of Württemberg and Princess Dorothea of Brandenburg-Schwedt. Of course,
William and Emma were about 35 years apart in age.

Louis XII of France and Mary Tudor were also second cousins twice removed,
through King Charles V of France and Jeanne of Bourbon. This couple was
about 34 years apart in age.

I suspect couples who differed greatly in age may exhibit such generational
disparity.

Charles von Hamm

Graham Truesdale...

How about Edward III's grandson Richard Earl of Cambridge, (1376-1415)
who married his first cousin's grand-daughter Anne Mortimer (1390-1411)?
(Richard was the son of the king's 5th son Edmund, Anne the great-granddaughter
of the king's 3rd son Lionel). Richard was about 2 years younger than his
father-in-law.
Lionel, his daughter and grandson were all teenage parents, while Edmund and his son
did not start begetting till their thirties.
http://genealogy.euweb.cz/anjou/anjou3.html

Charles von Hamm.

Charles von Hamm...

Do you know the relevant descents each of the Prince and the Princess?

mjcar...

Yes, and if you are interested I recommend you ascertain them to your
satisfaction. The Hamiltons may be found on Mr Theroff's excellent
site thus:

(I would recommend going back via her mother's Baden ancestry). The
Grimaldis may be seen on Euweb:

(I would recommend going back through their Lorraine ancestry)

I am not sure exactly what you are looking for: a relationship between
two royal spouses that is neither too close not too distant; I suspect
that there are so many marriages that fall into these broad terms that
posters are not replying because they don't know where to start. Also,
I do not understand why the Plantagenet instance given should meet your
criteria, as (apart from the generational mismatch) it is not a
particularly distant cousinship, nor a particularly impressive instance
of agnatic cousinship [particularly as one party was not an agnatic
descendant in any case]. Perhaps if you could clarify what you are
after, you will get more responses.

Best wishes

Charles von Hamm

Charles von Hamm...

Yes, that's quite close to what I am interested in. An interested case would
also be to find out whether there are
grandaunt-grandnephew/granduncle-grandniece marriages.

Charles von Hamm