here then stood a very ancient
tower, commanding this promontory on the side of the land. Between it
and the water the Visconti, in more recent days, had built a square
fort; and the headland had been further strengthened by the addition
of connecting walls and bastions pierced for cannon. Combining
precipitous cliffs, strong towers, and easy access from the lake
below, this fortress of Musso was exactly the fit station for a
pirate. So long as he kept the command of the lake, he had little
to fear from land attacks, and had a splendid basis for aggressive
operations. Il Medeghino made his request to the Duke of Milan; but
the foxlike Sforza would not grant him a plain answer. At length he
hinted that if his suitor chose to rid him of a troublesome subject,
the noble and popular Astore Visconti, he should receive Musso
for payment. Crimes of bloodshed and treason sat lightly on the
adventurer's conscience. In a short time he compassed the young
Visconti's death, and claimed his reward. The Duke despatched him
thereupon to Musso, with open letters to the governor, commanding him
to yield the castle to the bearer. Private advice, also entrusted to
Il Medeghino, bade the governor, on the contrary, cut the bearer's
throat. The young man, who had the sense to read the Duke's letter,
destroyed the secret document, and presented the other, or, as one
version of the story goes, forged a ducal order in his own favour.[12]
At any rate, the castle was placed in his hands; and affecting to know
nothing of the Duke's intended treachery, Il Medeghino took possession
of it as a trusted servant of the ducal crown.

As soon as he was settled in his castle, the freebooter devoted all
his energies to rendering it still more impregnable by strengthening
the walls and breaking the cliffs into more horrid precipices. In this
work he was assisted by his numerous friends and followers; for Musso
rapidly became, like ancient Rome, an asylum for the ruffians and
outlaws of neighbouring provinces. It is even said that his sisters,
Clarina and Margherita, rendered efficient aid with manual labour. The
mention of Clarina's name justifies a parenthetical side-glance at Il
Medeghino's pedigree, which will serve to illustrate the exceptional
conditions of Italian society during this age. She was married to
the Count Giberto Borromeo, and became the mother of the pious Carlo
Borromeo, whose shrine is still adored at Milan in the Duomo. Il
Medeghino's