(1282-1364) Master of the Order of Avis, predecessor of Dom João of Portugal, future King João I. Led a company of 600 Portuguese men in Pedro of Castile's invasion of Aragon in 1361. [Pedro, ch. 32: 41-44] Martim do Avelaall Chronicle entries in which Martim de Avelar appears: Crónica de D. Pedro, ch. 32: 43