In Christian theology, a private revelation is an instance of revelation, in a broader sense of the term, of divine reality to a person or persons. It contrasts with revelation intended for humanity at large, which is sometimes termed public revelation.
The Sacred Heart of Jesus revealed to Margaret Mary Alacoque
A Marian apparition is a reported supernatural appearance by Mary the mother of Jesus, or a series of related such appearances during a period of time.
The Marian Vision of Saint Bernard, by Fra Bartolommeo, c. 1504. Uffizi, Florence
Statue of Our Lady of La Salette, an apparition reported to have occurred in France
Our Lady of Guadalupe is widely considered integral to the cultural identity of Mexico and Latin American culture.
Jetzer being tricked. Jetzer was a Dominican friar in Bern, and some of his brothers tricked him into thinking he was receiving a revelation from the Virgin Mary. Eventually he realized the truth. As punishment for this scandal, four Dominicans were burned at the stake by order of Pope Julius II with an audience of 30,000 people on May 1, 1509.