He was wounded and took refuge in San Leonardo di Siete Fuentes, where, according to some sources, he was poisoned in 1297 by the Pisans who wanted to extend their authority in Cagliari to the Argentiera of Cixerri.
The Stagno di Santa Gilla or Stagno di Cagliari (literally ‘Pool of Cagliari’) is a coastal lagoon at the mouths of the rivers Cixerri and Mannu near Cagliari, on the Golfo degli Angeli in southern Sardinia, Italy.