Sprenger, in the _Malleus Maleficarum_, mentions that in the first year after its publication forty-one witches were burned in the district of Como, while crowds of suspected women took refuge in the province of the Archduke Sigismond.

Cantu's _Storia della Diocesi di Como_ (Le Monnier, 2 vols.) may be consulted for the persecution of witches in Valtellina and Val Camonica.
Cp.

Folengo's _Maccaronea_ for the prevalence of witchcraft in those districts.
After Sixtus IV.

came Innocent VIII.

His secular name was Giambattista Cibo.