Amroth, son of Amdir, was a Sindarin Lord of Lórien. He probably succeeded his father after he fell in the War of the Last Alliance of Elves and Men. Amroth wanted to leave Lórien as he tired of Middle-earth, and journeyed south to Edhellond, an old Elf-haven of his people, together with Nimrodel, his beloved.
However, Nimrodel was lost in the White Mountains, and Amroth long delayed his departure to Valinor. As he finally set sail, he thought he saw Nimrodel on the quays, and he jumped overboard to swim back to her. He drowned in the Bay of Belfalas and never returned home.