some scholars doubt the existence of this cardinal because he did not subscribe any papal bulls and his legation in armenia is not attested in the contemporary sources. agostino paravicini bagliani indicates that he's confused with niccolo da anagni (1206–72), nephew of pope gregory ix, who was only the lower official of the roman curia during his pontificate. he was never promoted to the cardinalate, despite serving as camerlengo of the holy roman church under pope alexander iv (1254–61).