Following serious and deep research the correct title of Valentino was Rodolfo Guglielmi of the marquises of Valenzina and of the counts of Antognolla.
Valenzina and Antognolla are two fiefdoms, still existing, in the region of Umbria, Italy. The fiefdoms were bought, from the pope, by a far relative of Rodolfo in the 1836 who with the fiefdoms got the titles. Being Giovanni Guglielmi, the father of Rodolfo, a far relativa of the actual marquis of Valenzina and count of Antognolla had, from the heraldic council the permission to use the title "of the marquis" not being an actual marquis. If you go online, you can know more about these two fiefdoms.