Eärendil & ElwingEärendil & Elwing - In the history of Middle Earth, only three mortal Men were married to immortal Elves.  They were Beren (married to Lúthien) in the First Age, Aragorn (married to Arwen) in the Third Age, and the third was Tuor, son of Huor, who married Idril, the daughter of Turgon, King of Gondolin.  They had a son named Eärendil who was born and raised in Gondolin.  He married Elwing, who was the daughter of Dior, and the granddaughter of Beren & Lúthien.  So they both had mortal blood flowing through them, but were counted among the immortal (mixed races of Elves and Men were able to choose which path they would live).  This life choice was most famously demonstrated among their twin sons, Elrond and Elros.  Elrond chose the immortal path and was alive even unto the end of the Third Age when the War of the Ring was waged.  Elros chose the mortal path and became the first King of Númenor.

 

Now Eärendil grew to love the sea and became a great sailor, and he built a ship he named the Vingilot.  This was in the time when Morgoth was unleashing terrible destruction upon the Noldor.  Eärendil saw little hope of their survival, so the decided to test the limits of his sailing skills and journey all the way across the Great Sea and seek the help of the Valar.

 

"Yet Eärendil saw now no hope left in the lands of Middle-earth, and he turned again in despair and came not home, but sought back once more to Valinor with Elwing at his side." ~The Silmarillion, chap. 24 (Of the Voyage of Eärendil)

 

The trip would prove successful, but came at a cost, as we shall see.