Angrod was a son of Finarfin and lord of the Ñoldor.
Angrod was the elder brother of Galadriel and Aegnor, and the younger brother of Finrod Felagund. Together with Aegnor he held the highlands of Dorthonion against Morgoth. Aegnor and Angrod were both slain in the Dagor Bragollach.
His wife was Eldalôtë and his son was Orodreth. Angrod was thus the grandfather of Gil-galad, Orodreth's only son.
His name was a Sindarized form of his Telerin (Quenya) name Angaráto.
Other Versions of the Legendarium
In the published The Silmarillion, Orodreth is given as Angrod's brother instead. This was an editorial decision by Christopher Tolkien which he admitted as a mistake.