. . . . "Gregory XV" . . . . . . . . . "Pope Gregory XV" . . . "Alessandro Ludovisi" . . . . . . . . "1554-01-09" . . . . . . "pope Gregory XV" . . . . "Ludovisi papacy" . . . . "1623-07-08" . . "XV" . "Pope Gregory XV" . . . . . . . . . . . . . . . "Gregory" . . "late pope's" . . "Alessandro Ludovisi" . . "Bishop of Rome" . . . . "1554" .