The kingdom of Aragon was a major naval power in the Middle Ages. Its sailors skills at seacraft gave it power – and that power was used to carve out a maritime empire in the western Mediterranean. Indeed its influence was felt in the eastern half of that sea as well. At its height it comprised in addition to its heartland on the southern side of the Pyrenees: Catalonia, Sardinia, Corsica, Athens, Sicily, Naples and the bit of Italy near to Naples and the Balearic Islands. Naples was no mean possession at the time. It was the largest port in the Western Mediterranean. There were several notable people of aragonese extraction who important figures in the late Middle Ages.