Forthwini Suralic was an Aivathiuda Thyn, a great Northman Warrior, and the son of the Althyn (High-chieftain) Marhwini. He served as his father's lieutenant and acted as the Aivathiuda's ambassador to Gondor during the reign of King Ondoher. He died fighting the Wainriders at Dagorlad in T.A. 1856. His parents called him by the archaic label Suralic, just as they called his three sisters Susufa, Susera, and Suneg.