 When Pope Innocent II divided Sardinia between the sees of Pisa and Genoa in 1133, Arborea fell to the former, but Comita, for reasons of furthering Arborean independence, allied with Genoa during the subsequent civil wars of that decade.In 1145, Comita was excommunicated by Baldwin, Archbishop of Pisa, and the "kingdom" of Arborea was nominally transferred to Logudoro.Comita's son and successor, Barison II, put Arborea back on good terms with Pisa.