His sons Albert and Emmanuel changed the family name to Mensdorff-Pouilly, which refers to a village in the county of Roussy in Luxembourg.

Emmanuel von Mensdorff-Pouilly received an Austrian comital title from the Emperor Francis I, and he was recognized as noble in Bohemia (the Inkolat) in 1839.

[3] Through Emmanuel's wife, Princess Sophie of Saxe-Coburg-Saalfeld, the family is closely related to the royal families of Belgium, Sweden, Portugal, Bulgaria and the United Kingdom.

As a result of the marriage of Count Alexander von Mensdorff-Pouilly with Alexandrine von Dietrichstein (1824–1906), daughter of Joseph Franz, Prince of Dietrichstein, Alexander changed his branch's name to Mensdorff-Pouilly-Dietrichstein.

He received the hereditary title of Prince von Dietrichstein zu Nikolsburg in 1868 from Franz Joseph I of Austria.