Aragorn’s royal name when he became king in J.R.R. Tolkien’s The Lord of the Rings was Elessar.
The name means “Elfstone” in Quenya and connects Aragorn with the green stone associated with his royal destiny. Galadriel gives him the Elessar in Lothlórien, and it becomes one of the symbols of his restored kingship. After the War of the Ring, Aragorn is crowned King Elessar of the Reunited Kingdom.
He also takes the name Telcontar for his royal house. Telcontar is the Quenya translation of Strider, Aragorn’s well-known nickname, so it identifies his dynasty rather than replacing Elessar as his personal royal title.
Aragorn’s full royal identity therefore includes several names and titles: he is Aragorn son of Arathorn, Elessar, and founder of the House of Telcontar. These overlapping names reflect different stages of his life and heritage.