After the Norman conquest, the population of the Maltese islands kept growing mainly through immigration from the north (Sicily and Italy), with the exile to Malta of the entire male population of the town of Celano (Italy) in 1223, the stationing of a Norman and Sicilian garrison on Malta in 1240 and the settlement in Malta of noble families from Sicily between 1372 and 1450. As a consequence of this, Capelli "et al." found in 2005 that "the contemporary males of Malta most likely originated from Southern Italy, including Sicily and up to Calabria."