Dior's Sons, Eluréd and Elurín, Elrond's uncles are said to have been left in the forest to starve. Then Maedhros went looking for them and could not find them and it is assumed that they died. But without proof of this how can anyone be sure? Tolkien Gateway hints they may have survived, I kind of go with this as no bodies as said to have been found. My Theory is that they most likely hid from Maedhros, they were frightened, little kids. Survived somehow and most likely changed their names, elves are known to do that. But what do people think?