The next year, San Lorenzo took part in the Ghibellines expedition against Martana Island and other Guelphs centres but the next year it renewed its obedience to the Church. In 1294, San Lorenzo and other centres of Val di Lago, professed submission to Orvieto.
In the subsequent year, San Lorenzo joined the Ghibellines' expedition against Martana Island and other Guelph strongholds but later reaffirmed its allegiance to the Church. In 1294, San Lorenzo along with other Val di Lago centers pledged submission to Orvieto.