Following the accession of Henry I's successor, King Stephen, Nigel remained as treasurer only briefly before his family was ousted from political office by the new king. Nigel rebelled and deserted to Stephen's rival Matilda, but eventually reconciled with Stephen. Although he subsequently held some minor administrative posts, he never regained high office under Stephen. On the king's death, Nigel was returned to the treasurership by the new king, Henry II. Nigel's second tenure as treasurer saw him return the administration to the practices of Henry I. He withdrew from much of his public work after around 1164, following an attack of paralysis. He was succeeded as treasurer by his son, Richard fitzNeal, whom he had trained in the operations of the Exchequer, or Treasury of England. Most historians, then and now, have felt that Nigel's administrative abilities were excellent; he is considered to have been more talented as an administrator than as a religious figure.