Isabelle was the daughter of unknown parents. The date and place of her birth have not been found.
Her husband was Lucino Visconti, who she married in 1339. The place has not been found. They had no known children.
Note 1
fille de Carlo Fieschi, un capitaine génois, seigneur de Savignone et neveu du pape Adrien V (1205-1276)