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I was looking at the Noldor House of Finwë descendancy and on one side it shows Arwen, daughter of Elrond as we all know. But I didn't know this part: the other side breaks off into Aragorn as a descendant of Elros - Elrond's twin brother. Does that make them cousins?

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The first Appendix to LoTR recounts the Tale of Aragorn and Arwen, and tells of their first meeting when Arwen says: "Then we are akin from afar". – Daniel Roseman May 23 '14 at 6:10
Aragorn definitely has Aunt Lindsay’s nose. Wait, sorry, wrong universe. – Paul D. Waite May 23 '14 at 8:37
Kissin' cousins... – Brian Warshaw May 23 '14 at 16:51
To everyone here using family trees off the webz, I'm not sure where these find their source? For all I know, the books would be the only sources that may decide this. But I know that most of the names in these family trees are never mentioned. – poepje May 24 '14 at 16:06
up vote 32 down vote accepted

Using the family-tree from, by my quick-count it seems Arwen and Aragorn II are first-cousins either 62 or 67 times removed, depending on whether you go through Aragorn's great x 14 grandfather (Arvedui) or great x 14 grandmother (Firiel) who both descended from Elendil (Arvedui on the Isildur side, Firiel on the Anarion side).

Hence Elendil is Aragorn's great x 38 grandfather as well as Aragorn's great x 43 grandfather.

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For fun, you could try sticking a few more greats in wolfram alpha – user12183 May 24 '14 at 0:16

The short answer is yes, they're directly related (first cousins) albeit separated by a very considerable age gap.

This handy family tree from The Encyclopaedia of Arda should be helpful to you:

Arwen Aragorn

Please note that the dotted line represents many thousands of years of lineage on Aragorn's side of the family.

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The men of Numenor are long-lived, but this still represents something like 50 generations of descent between Elros and Aragorn. (We could get a rough idea how many by counting the Kings of Numenor and later of Arnor, but I can't be bothered to go get my copy of LOTR and do that just now.) In real-world terms it would be like marrying someone you shared an ancestor with about 1000 years ago. Any two people from (say) the same European country are likely to have a common ancestor if you go this far back. – Royal Canadian Bandit May 22 '14 at 20:55
@RoyalCanadianBandit - Precisely. Obama = related to Clinton, the Queen, Churchill, Tony Blair, George Bush, etc etc/ – Valorum May 22 '14 at 21:24
Aragorn's descent is a little more complex: his relationship to Elros was actually through the eldest daughter of the fourth king of Numenor, so he's a good deal more distant than the simple chart above may lead you to think. – user8719 May 22 '14 at 21:47
@JimmyShelter - Yes, the chart is a bit of fluff designed to illustrate the foolishness of trying to backtrack familial relations over millenniun. At any point this lineage could easily have been illegitimised by a bored queen and a bottle of cheap bordeaux. – Valorum May 22 '14 at 21:49
@PaulDraper, the technical term for generational differences of this sort is "removes", eg. if your grandfather was my great-grandfather, we'd be "first cousins once removed". Aragorn and Arwen are "first cousins fifty-someodd times removed". – Mark May 23 '14 at 3:51

Very distant first cousins, many many times removed.

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many thousand years removed. – Oldcat May 22 '14 at 20:32
Yep, quite the older woman. – ohmi May 22 '14 at 20:33
Those dunedain sure love their cougars! – System Down May 22 '14 at 20:43

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