Viggo Mortenson’s most famous movie role, by far, is the heroic Aragorn in the Lord of the Rings films, and his son, Henry Mortenson, even appeared in two separate cameos. Throughout Peter Jackson’s award-winning Lord of the Rings trilogy, Aragorn, from the race of Men, is one of Frodo’s (Elijah Wood) companions who embarks on the perilous quest to destroy the One Ring in Mordor. Though lives are lost along the way, Frodo and co. are successful on their mission, and Aragorn in particular gets a happily ever after, marrying Arwen (Liv Tyler) and becoming King of Gondor.

https://screenrant.com/henry-mortenson-lord-rings-cameos-explained-where-viggo-son-now/