BragiBragi, in Norse mythology, son of Odin and Frigg, is the god of poetry and eloquence. The verb 'to brag' is derived from from his name, and also, given that in the mythos poetry is considered to be an intoxicant of the gods, possibly also the verb 'to brew'. Bragi was the patron of poets, called skalds. He had runes carved on his tongue. His wife was Idun. He could inspire creativity in people by giving them some special mead to drink.
Bragi was probably based on a real person, the skald Bragi Boddason, from the 9th century. He was deified after his death.
A Bragarfull was a sacred cup over which people swore oaths, honored dead kings or kinsmen. Newly enthroned kings drank from a Bragarfull.