Lindon

The Grey Havens
Lindon, one of the last lands of the Eldar. It was once a great kingdom lead under Gil-Galad, but it ended when their King died in combat in the Last Alliance against Sauron. Following his death Glorfindel took it upon himself to unite all the Noldor in the High Kingdom of the Noldor.

The ports of Mithlond are also the place where the ships to Valinor leave since the destruction of Beleriand.

Current Ruler:
-King Araneg of Anartiris

First Age
The name Lindon was first used by the exiled Noldor for the region of Ossiriand.

Lindon was the only part of Beleriand that survived the War of Wrath, the rest of the land having been broken or submerged by the tumults.However, Belegaer the Great Sea broke through the mountain chain, creating the Gulf of Lhûn.

Many of the surviving Elves of drowned Beleriand, especially the exiled Noldor, relocated to Lindon by the beginning of the Second Age, where they were ruled by Gil-galad.

Second Age
Gil-galad founded the Kingdom of Lindon in S.A. 1 ruling over the Noldor and Sindar and all the Elves of Lindon alike. They also built the Havens (Mithlond, and also likely Harlond and Forlond) and many Elves left from there to Valinor.

The Noldor mainly dwelt in Forlindon, and the Sindar (and surviving Green-elves) in Harlindon (a fief under the rule of Celeborn). Presumably, the surviving Edain also stayed for some time alongside the Elves of Lindon, until they left for Elenna (S.A. 32). But there was some tension between the Elves; some of the Sindar did not wish to live under Gil-galad alongside the Noldor, and went to the Silvan Elves in the east, who were their Telerin kin. Some Noldor also left to found Eregion (S.A. 700), the second of the two Noldorin realms.

In S.A. 600 Entulessë, a ship from Númenor arrived in Mithlond where Gil-galad welcomed the Númenóreans, before restablishing contact with their Mannish kin, the Middle Men.

During the War of the Elves and Sauron, Sauron had overrun Eriador. The Elves called that time Days of Flight as many fled to Lindon where Sauron could not enter, and thence over the Sea to the Uttermost West. Eventually Tar-Minastir sent ships to Lindon, responding to Gil-galad's plea. The combined army of Elves and Númenóreans drove Sauron's forces out of Eriador.

In the tumult following the Downfall of Númenor, Lindon suffered great loss as "the sea rode in upon the land", and therefore had shrunk when the Third Age began.

Source: [//lotr.fandom.com/wiki/Lindon https://lotr.fandom.com/wiki/Lindon]