S.D.N. Gregorii Papae XV. confirmatio priuilegiorum Congregationis Clericorum Regularium Theatinroum nuncupatorum..
GregoryXV,Pope,1554-1623.
Catholic Church.Pope (1621-1623 : Gregory XV)
Romae, : Ex Typographia Reu. Camerae Apostolicae.,
1621..
'Datum Romae apud Sanctam Mariam Maiorem ... die 16. Octobris [16 October] 1621.'
In text: 'Motu itaque proprio ... '.
Woodcut decorations including, on title page, coat of arms of Gregory XV.
Theatines
Privileges and immunities, Ecclesiastical