Family Tree Trivia

[Galadriel55]

Originally Posted by Huinesoron

Who is Arwen's closest named cousin whose lifespan overlaps with hers?

On the Elvish side, I believe the last of the family is dead before the end of the Second Age, with the deaths of Celebrimbor and Gil-Galad. Arwen was born after the start of the TA. So looking therefore at the human side of the lineage, Arwen's cousin-many-times-removed Valandil was alive when she was born.