sentences:  In 1387, his brother died under Aragonese captivity and Marianus became sole judge at a time when the Giudicato of Arborea was at war with the Crown of Aragon.On 24 January 1388, Eleanor signed a pact with Aragon which brought peace and safeguarded Marianus' rule.On 16 August 1391, Marianus accompanied his father at the occupation of Sassari and Osilo.