Bëor's dates of birth and death are only given in volume XI of The History of Middle-earth, and may not be completely reliable. The text of The Silmarillion, however, confirms that Bëor was ninety-three years old when he died, a fact which tends to support the dates shown above.

Bëor's elder son Baran was the ancestor of some of the great heroes of Middle-earth, including Túrin Turambar. His younger son Belen was much less prominent (to the extent that he doesn't appear in any canonical source). Through the marriage of Baran's descendant Barahir to Belen's descendant Emeldir, the two lines were merged, and such characters as Beren, Eärendil, Elrond and even Aragorn could thus claim descent from both the sons of Bëor.