Princedom of San Donato

This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources. Find sources: "Princedom of San Donato" – news · newspapers · books · scholar · JSTOR (June 2019)

The Principality of San Donato was created by Leopold II, Grand Duke of Tuscany, for the Italophile member of the Russian nobility, Anatoly Nikolaievich Demidov in 1840, so that Demidov could marry Mathilde Bonaparte, niece of Napoleon, without her losing the title of Princess.