Every year on Feb. 22, the Catholic Church celebrates the feast of the Chair of St. Peter, a tradition that ... publicly exhibited in 1867, when Pope Pius IX allowed it to be seen for 12 days ...

then removed from the calendar by Pope Pius V in the mid 16th century. Pope Sixtus V later reestablished the feast in 1585, and it is still celebrated today, commemorating the faith of her parents ...