First Age 503

First Age 503 (abbreviated to F.A. 503) is the 503rd year of the Sun of the First Age of Middle-earth.
Notable events in this year include:
* The Dwarves of Nogrod enter Doriath and attack Menegroth. In the Battle of the Thousand Caves the elves are defeated, Mablung is slain, and the dwarves take the Nauglamír.
* Beren leads and army of Ents and Elves at the Battle of Sarn Athrad. The Dwarves are defeated and Beren returns to Ossiriand with the Nauglamír.
* Birth of Elwing.
* Dior removes to Doriath and becomes King. His family goes with him.
== Spring ==
* Birth of Eärendil.
== Autumn ==
* Death of Beren and Lúthien. A messenger brings Dior the Nauglamír.