Baldr (also Balder, Baldur) is a god in Norse mythology.
In the 12th century, Danish accounts by Saxo Grammaticus and other Danish Latin chroniclers recorded a euhemerized account of his story. Compiled in Iceland in the 13th century, but based on much older Old Norse poetry, the Poetic Edda and the Prose Edda contain numerous references to the death of Baldr as both a great tragedy to the Æsir and a harbinger of Ragnarök.
According to Gylfaginning, a book of Snorri Sturluson's Prose Edda, Baldr's wife is Nanna and their son is Forseti. In Gylfaginning, Snorri relates that Baldr had the greatest ship ever built, named Hringhorni, and that there is no place more beautiful than his hall, Breidablik.
Jacob Grimm in his Teutonic Mythology (ch. 11) identifies Old Norse Baldr with the Old High German Baldere (2nd Merseburg Charm, Thuringia), Palter (theonym, Bavaria), Paltar (personal name) and with Old English bealdor, baldor "lord, prince, king" (used always with a genitive plural, as in gumena baldor "lord of men", wigena baldor "lord of warriors", et cetera). Old Norse shows this usage of the word as a honorific in a few cases, as in baldur î brynju (Sæm. 272b) and herbaldr (Sæm. 218b), both epithets of heroes in general.