 Ubaldo did not, however, recognise any authority over Gallura other than the ancient authority of the Pisan archdiocese.Ubaldo drew up a will in January 1237 at Silki.His nephew John was nominated to succeed him, but his widow's second husband, Enzo, took control of both Gallura and Logudoro and was granted the title King of Sardinia by his father, the Emperor Frederick II.