Elatan (born Second Age circa 515) was a nobleman who lived in the city of Andúnië during the early centuries of Númenor. He wedded Silmariën, the daughter and eldest child of Tar-Elendil, the fourth King of Númenor. Because of the law of agnatic primogeniture, Silmariën could not take the Sceptre. However, when Elatan and Silmariën had their first child, Valandil, Tar-Elendil created the title Lord of Andúnië to celebrate his first grandson. Valandil would become the first Lord of Andúnië and Elatan's descendants would be titled nobleman.
Elatan's descendants would figure prominently in the history of Middle-earth. After the Downfall of Númenor, Elendil, the last Lord of Andúnië, would found the Kingdoms of Arnor and Gondor. Over thousands of years, Elatan would become the ancestor of Aragorn Elessar, the hero of the War of the Ring.
Tar-Elendil | | Silmariën = ELATAN | | Valandil