There isn't one definitive "youngest elf" because most aren't named or aged, but Arwen is often cited as the youngest known named High Elf with a specific birth year in Tolkien's lore, born in TA 241, making her around 2,778 years old during the War of the Ring, though younger, unnamed elves likely existed, and Legolas might have been younger as a Sindar elf born in the Third Age, but his exact age is unknown. Elves age very slowly, reaching physical maturity around 100, so even "young" elves are ancient by human standards, with birth records sparse.
As far as I know, Arwen, born early in the third age, has to be the youngest elf with a known year of birth.
IIRC Cirdan is the oldest known elf. It's possible (though unlikely) that he might have not been the oldest elf of his people despite being their leader.
Elves, at least the Eldar, have a pregnancy that lasts about a year. By the age of 1, Elves can speak, walk and dance. Puberty and full height are attained at around their fiftieth to one hundredth year, when they stop aging physically.
Legolas could be younger than Arwen, since in the books he doesn't have a set birthdate. The movies give his age as slightly older, but it wouldn't be a stretch to say he's slightly younger instead. But as far as definitive birthdates go, yes, Arwen is the youngest known Elf.
Everyone is going to have a different answer but, for elves, I assume this: The human equivalent is x5 up to 'mid-twenties' bracket. So, a '16yo' is 80 years while a '24yo' is 120 years. After that, the aging process essentially stops.
There was also a strange Elf clad in green and brown, Legolas, a messenger from his father... Legolas was a Silvan Elf of Sindarin origin, the prince of the Woodland Realm of Mirkwood. His grandfather Oropher was of the Sindar of Doriath, and his father Thranduil was king of Mirkwood (Greenwood the Great).
The rate for elves is much slower even than dwarves. Tolkien says that a 20 year old elf appears to be 7 years old. They come of age culturally at 50, but are said to reach physical and mental maturity at 100.
Are grown-ups allowed to intervene? Santa advises that no family member touch their Elf on the Shelf, but he does describe a few rare instances when an adult may use tongs or potholders to help an elf in an urgent situation.
Elves can live around 750 years, so about 10 human years per elf year.
Gandalf specifically says Treebeard is "the oldest living thing that still walks beneath the Sun upon this Middle-earth." Just fun to remember there are trees older than any non-Ainur living thing.
Arwen married Aragorn in the year 3019 of the Third Age, when he was 88 years old and she was 2,778 years old. The last year of the Third Age was 3021. Aragorn ruled until the year 120 of the Fourth Age, when he was 210 years old.
Legolas is a Sindarin Elf from the Woodland Realm of Northern Mirkwood. His father, Thranduil, is the King of the Silvan Elves living in that realm, making Legolas the Prince of Mirkwood.
Arwen is one of the half-elven who lived during the Third Age; her father was Elrond half-elven, lord of the Elvish sanctuary of Rivendell, while her mother was the Elf Celebrian, daughter of the Elf-queen Galadriel, ruler of Lothlórien.
It's an indication that Aragorn is a member of the Dunedain, the Men of the West who came from Numenor. They all had extended lifespans. It also indicates he is a potential match for Arwen, who as an Elf is ageless and potentially immortal.
This is the most effective way to help your Scout Elf get back in action quick! Sprinkle a little cinnamon next to your Scout Elf. Cinnamon is like vitamins for your elf, and it will help him or her get back to the North Pole where the elf doctors can give them a quick check-up! Sing a Christmas carol with your family!
Top Reasons Your Elf is in the Same Spot. They have a favorite spot in your home. When your Scout Elf flies back from the North Pole and lands in the same spot, chances are it's their favorite place to sit in your home. Just like you have a favorite spot on the couch, your elf has favorite spots, too!
And because it takes an elf baby a very long time to become full-grown (sometimes 20 years or more!), they enjoy plenty of time cuddling and being cared for by their families.
Círdan the Shipwright is estimated to be around 10,000 years old during The Lord of the Rings and around 7,000 years old during The Rings of Power. Círdan was one of the oldest and wisest elves in Middle-earth, and was the Lord of the Falas during the First Age and Lord of Lindon during the Third Age.
Elves are immortal but can be killed in battle, in which case they go to the Halls of Mandos in Aman for an afterlife. They may be restored by the Will of the Valar, and then go to live with the Valar in Valinor, like an Earthly Paradise, though just being in the place does not confer immortality, as Men supposed.
According to the movie people, Legolas is 2,931 years old - and according to the book people, Aragorn was born in the year 2931 of the Third Age, meaning that during the quest his birth year is the same number as Legolas's age. Coincidence? Or did the movie makers purposefully reuse this number?))
Throughout the trilogy, the color of Legolas's eyes change from blue to brown. This is because the contact lenses Orlando Bloom was wearing scratched his corneas, and could not be worn every day. In some of the shots, the post-production team digitally changed the color of his eyes.
Tolkien's description of Gollum conforms to a Catholic – and Thomistic – account of envy, which is a “sadness of the soul”; and it is Gollum's unbearable sadness and his unquenchable desire for the one Ring that marks his character.
Indeed, it seems Elrond used this The Rings of Power kiss not to admit his true feelings for Galadriel but so that he could slip her a pin from his cloak.