niccolo conti di segni - italian cardinal allegedly created by pope gregory ix with the title of san marcello in the consistory of december 1228 (or 1230) and subsequently sent as papal legate to armenia to mediate in the conflicts between king hethum i of armenia and the principality of antioch; king hethum i considered him partial in favor of the principality of antioch and asked pope for his recalling. he is said to have died in 1239.