Bórin son of Náin

Born in T.A. 2450, Bórin was the younger son of King Náin II. During his youth, the House of Durin lived in the dragon-plagued Grey Mountains that were ruled by his brother Dáin I.

When the King and his son Frór were slain by a Cold-drake, Durin's folk divided. Bórin followed the new King Thrór back to Lonely Mountain, while others followed Grór to the Iron Hills. Bórin lived with the Dwarves of Erebor under King Thrór for the rest of his life.

Through his son, Fárin, Bórin was the ancestor of four of the thirteen Dwarves of Thorin and Company (Balin, Dwalin, Óin, and Glóin) and Gimli Elf-friend of the Company of the Ring.