A giant from Lombardy who learned of the fame of Arthur’s Sir Lanval and sought to duel with him. He issued a challenge to Lanval, and Lanval traveled to the city of Atalye in Lombardy to accept.
During the battle, Valentyne kept knocking Lanval’s armor to the ground, but Lanval’s servant kept retrieving his master’s dropped equipment, allowing Lanval to eventually kill Valentyne. Valentyne’s knights sought to kill Lanval in revenge, but Lanval slaughtered them all.
Source
Sir Launfal | Thomas Chestre, late 14th century