Vesemir is the oldest and most experienced witcher; possibly older than Kaer Morhen itself. He spends each winter in the fortress and sets off on the road when the spring comes, just like all the others. Despite his age Vesemir is robust and lively. Many youngsters could envy him his health. An excellent fencer, he was the one who taught me swordsmanship.
He has raised many witchers, including me. His disciples treat him like a father. Leo was probably the old witcher's last protégé - the boy's death shocked him.