Pietro Lorenzetti ( or his workshop ) executed a frescoed triptych with a Madonna and Child with Saints John the Baptist and Francis .
However , the decorations of the chapel dedicated to Saint John the Baptist were never finished .
Pietro Lorenzetti ( or his workshop ) executed a frescoed triptych with a Madonna and Child with Saints Saint John the Baptist     and Francis .
However , the decorations of the chapel dedicated to Saint John the Baptist were never finished .