no , i read the book ( 6 of them on 7) and watch the serie and play the game .what we know of geralt is Geralt was the son of sorceress Visenna and (presumably) a warrior called Korin. Shortly after being born, Geralt was taken by his mother to the Witchers' Place — the Kaer Morhen stronghold (from Elder Speech Caer a'Muirehen meaning "Fortress of the Old Sea"). Geralt survived numerous mutations during the Trial of the Grasses, through which he gained practically superhuman physical and mental abilities (increased reflexes, speed, strength and enhanced hearing) surprisingly well. Because of that, as one of the few he was selected for additional experiments, and of the few he was the only one that survived. His white hair, completely lacking pigment, is a side effect of these experiments. After finishing the witcher training, he embarked into the world on his horse called The Roach (he gave the same name to his every horse) to become a monster slayer for hire.Even though Geralt did not believe in destiny, he demanded the unborn child of princess Pavetta and her husband Duny as a reward for his services. As the child turned out to be a girl, he did not take her. However, fate or blind chance caused Geralt and Ciri, the daughter of Duny and Pavetta to cross paths thrice, and after the death of her grandmother, queen Calanthe, Geralt ended up taking care of the girl and loving her as his own daughter. His best friend was Dandelion the bard, while his lover and the love of his life was Yennefer. they never speak about is age in the book we know he is around 30 -35 not more ( he is a witcher around 18-20 after is fight with thorwald )and we know that witcher live longer than normal human because of mutations ( but not as long as sorcerer some of them chapter member as yenefer ( 105 year old) and the oldest was gerhart d'aelle ( around 500) , some elf are also more older)