Virfuril was King Demavend's father and the previous ruler of Aedirn. He defeated King Medell's armies at Hagge, thereby strengthening his control of the Pontar valley and established the existing borders between Temeria and Aedirn.
In the Netflix series
King Virfuril, portrayed by Ben Lambert, briefly appears in Season 1/Episode3: Betrayer Moon of The Witcher (TV Series). In the show, the sorcerers planned to establish Fringilla to be the King's new counsellor, but Yennefer can entice the king with her beauty and her Aedirn roots.