Invented it? Some unknown person from pre-history, probably a Greek. The earliest history of Greece has politicians who are skilled at oratory. Earlier civilizations such as the Babylonians and Egyptians were more monarchial, and oratory would not have been a prized skill among them.
Brompton Oratory was created in 1884.
The Oratory School was created in 1859.
Oxford Oratory was created in 1993.
An oratory speech is 8-10 min. persuasive speech.
The Oratory Preparatory School was created in 1859.
Oratory of Santissimo Crocifisso was created in 1568.
The motto of Oratory Preparatory School is 'Fidelitas'.
Oratory Preparatory School was created in 1907.
London Oratory School was created in 1852.
Oratory (the art of manliness)
The Congregation of Holy Cross is in charge of the Oratory in Montreal.
London Oratory School Schola was created in 1996.