One Thing in Common

[Huinesoron]

Originally Posted by Formendacil

Your last formulation is closest, though I have a more specific fact in mind--i.e. Earendil would NOT share it.

They're all boys whose mother was of a different race than that they are held as belonging to. All four were very much their fathers' sons.

I can't think of anyone else who meets that precise description - all the candidates fail one way or another (assuming Dior is taken to be Elvish).

hS