Unions of Elves and Men

Only a few times in the history of Arda have there been unions of Elves and Men. The offspring of such marriages were known as Half-elven. There were only three unions of the Eldar and the Edain:
* Beren and Lúthien
* Tuor and Idril
* Aragorn and Arwen
== Similar cases ==
Aegnor and Andreth fell in love, but they couldn't fulfill their love due to war.
According to a local legend, Imrazôr, the Prince of Belfalas, married the Elven maiden Mithrellas, but when she had borne him two children, she slipped away.