How the Order of Preachers (Dominicans) came to be at the ancient Church of Santa Sabina on the Aventine Hill in Rome.
From the Dominican History blog:
From an interview on Vatican Radio, Feb 24, 2009 with Fr. Robert Ombres, O.P., who tells how the Dominicans came to Santa Sabina and why the Pope visits this Dominican Church on Ash Wednesday. Fr. Robert Ombres, O.P., a son of the English Province, is presently Procurator General of the Order of Preachers, and lives at the Priory of Santa Sabina in Rome.