In 1760, the title of Reichsfürst or prince of the Holy Roman Empire was added and attached to the lordship of Torriglia and the marquisate of Borgo San Stefano, together with the qualification of Hochgeboren.

That same year, the Dorias inherited the fiefs and titles of the house of Pamphilj of Gubbio, patricians of Rome and Princes of San Martino and Valmontone.

[1] Prince Filippo Andrea VI Doria Pamphilj, a staunch anti-Fascist, in 1944 became the first mayor of Rome following its liberation by the Allies (his father had been Senator of the newborn Kingdom of Italy in 1870).

The ability of Jonathan Pogson Doria Pamphilj's children to inherit, after his death, was called into question in October 2009 and legal action was taken by his sister on this point.

On the basis that Jonathan Pogson Doria Pamphilj's children were born of surrogate mothers, Gesine Floridi claimed that a recently passed Italian law on assisted procreation debarred them from inheriting.