Men of Arnor, or Arnornians, describes the Men of Arnor. They were the peoples of the Kingdom of Arnor. They were descended from the Númenórean colonists who settled there throughout most of the Second Age and their noble kin who escaped the destruction of Númenór in SA 3319. Being mostly of Númenórean stock and ruled by exiled Númenórean overlords, the people continued most of the customs and traditions of Númenór.
Before the foundation of Arnor there was already a sizable Númenórean population living in Eriador, a result of the slow emigration of Númenóreans which had started under Tar-Meneldur and Tar-Aldarion. The region was home to Middle Men of Edain stock, and the early colonists soon interbred with the indigenous population.
The people of Arnor, the North-kingdom founded by Elendil in Middle-earth after the Downfall of Númenor. Elendil was its first King, and was held as High King over both the North- and South-kingdoms (hence the name Arnor, which means 'Land of the King').
The Men of Arnor were severely depleted by the War of the Last Alliance, in which many of them fell. Nonetheless, the land of Arnor survived for nearly a thousand years under ten different Kings. The eldest son, Amlaith, claimed Kingship over all Arnor but was reduced to only ruling the region of Arthedain as his kingdom, while the other sons founded the kingdoms of Cardolan and Rhudaur. The largest part of the populace were Eriadorian Commoners, who were ruled by an upper class of Northern Dúnedain, though there was a broad mixed-blooded middle-class, especially in the urban centers and the lesser Nobility or Gentry.
Their realms were lost during the Third Age, and for the millennium before the War of the Ring, they were a wandering people. Their leader, who took the title 'Chieftain', was the descendant of the ancient King, Isildur.