Oropher - brother of Celeborn?

[Ivriniel]

Kin from the North, makes sense, as posted upstream. I suppose it's possible. Perhaps cousins, or distant cousins. We don't know how small the Cuivinen population was, and if it grew before the Migrations.

Add to that, Celeborn remained behind, while Galadriel went home to Valinor. Celeborn seems to have had a heart's call to settle or rule Mirkwood's south, I seem to recall.

I've always had a headache when tracing Celeborn's birth and lineage. It got very weird in some of UT's notes, with inbreeding implied by the 'Valinor birth' version of Celeborn's heritage.