Boholt is the oldest member and also the leader of the Crinfrid Reavers, a group of mercenaries hired by King Niedamir to take part in the hunt for a dragon outside Barefield in "The Bounds of Reason", a short story in the Sword of Destiny collection by Andrzej Sapkowski. The rest of the group includes:
Early concept art from the game suggests that Boholt was considered as a character, but obviously did not make the final cut.
Boholt does not appear in The Witcher 2, only his compatriots Kennet and Desbrut do, but they tell a sad tale of what became of their leader after the dragon hunt. They say he lost his memory after taking a spill and hitting his head on a rock and while he "can still be a beast in battle", he does nought much else, having even lost his interest in women.