Since the 19th century, several lineage members achieved prominence in different domains of public life, including the theatre and cinema director Luchino Visconti.

In 1473, the two brothers Francesco and Guido Visconti di Somma divided the castle and the other family properties.

The title of Count of Lonate Pozzolo traces back to the properties and noble rights in Lonate Pozzolo, a few kilometres south of Somma Lombardo, received by Guido Visconti di Somma in the division with his brother Francesco.

[3] During the 19th and 20th centuries, industrial undertakings were started by different family members around Milan: silk production in Canegrate, a weaving plant in San Vittore Olona, a bleaching factory in Somma Lombardo, and a cotton mill in Vaprio d'Adda.

[2] At the beginning of the 20th century, Giuseppe Visconti di Modrone (1879–1941), the father of the filmmaker Luchino, renovated a group of hovels and old stables surrounding a medieval family castle located 12 kilometres (7.5 mi) from Piacenza in the municipality of Vigolzone and transformed them into a village of Middle Age aspect which in the early 20th century was named Grazzano Visconti.