Relationship between Thingol and Cirdan

[Arvegil145]

Just as it says on the tin, what do you think was the familial relationship between Thingol and Cirdan?

Obviously there's no concrete answer to the question (yet), but I'd really like to hear other people's opinions on this - just for the fun of it!

We know that Thingol and Cirdan were related by blood:

...he was akin to Olwë, one of the two kings of the Teleri, and lord of those who departed over the Great Sea. He was thus also akin to Elwë, Olwë's elder brother, acknowledged as high-king of all the Teleri in Beleriand, even after he withdrew to the guarded realm of Doriath.

- The Peoples of Middle-earth, 'Last Writings', 'Círdan', p. 385

and especially this:

Elwe himself had indeed long and beautiful hair of silver hue, but this does not seem to have been a common feature of the Sindar, though it was found among them occasionally, especially in the nearer or remoter kin of Elwe (as in the case of Círdan).

- The War of the Jewels, 'Quendi and Eldar', 'Sindar', p. 384


Personally, and there really is no good evidence for this, my head-canon is that Cirdan was Thingol's (and Olwe's) uncle. Why? No good reason other than the fact that Cirdan always struck me as the 'cool uncle' sort of guy - and also because Thingol's parents joined the Great March (at least according to one text in the NoME where Elmo, the younger brother of both Thingol and Olwe, was born during the said march), implying that at the very least some of the members of the generation preceding Thingol joined the Eldar.