Sometime between 1113, the first year in which Constantine is recorded as sole ruler, and 1115, a Tuscan and Lombard fleet, led by the Republic of Pisa, sailed into the harbour of Porto Torres following the successful liberation of the Balearic Islands from Saracen domination.
According to the Liber maiolichinus, Constantine was recognised as re chiaro e molto celebrato ("clear, most-celebrated king") over the entire island of Sardinia after this.
The reasons for such strong support of monasticism, the papacy (including the Gregorian reforms), and the suzerainty of the archdiocese of Pisa were probably the advancements brought by closer ties to the mainland and the technological, economic, agricultural, educational, and religious knowledge that the monks brought.
During Constantine's reign, the noblemen, especially those of the Athen and Thori families, first began to expand their religious interests and participate in the ecclesiastic expansions and structural reforms that characterised the twelfth century in Sardinia founded a series of churches.
Other later documents cite a wife named Maria de Orrubu, but whether or not these were two different women or the same woman is unknown, though the former hypothesis seems most probable.