 In accordance to his will, De la Gardie was appointed Lord High Chancellor and, as such, member of the regency that ruled Sweden during the minority of Charles XI (1660–1672).De la Gardie was the most renowned and influential among the regency members, although he was often challenged.This may have been due to the fact that he was, reportedly, unable to work enough, and that he often left the court to spend significant time on his different estates, a disadvantage for both the government and De la Gardie's own position of power.