The title Marquis of Torres Novas (in Portuguese Marquês de Torres Novas) was created by royal decree, dated from 27 March 1520, by King Manuel I of Portugal, to Dom John of Lencastre (1501–1571), eldest son of Infante George, Duke of Coimbra.
In 1535 the new King, John III, granted him the new title of Duke of Aveiro and, from then on, the title of Marquis of Torres Novas was allocated to the Duke of Aveiro's heir.