Question: What nationality is Duchess Maria Elisabeth In Bavaria's husband?
Sentence (from "Louis-Alexandre Berthier"): Louis-Alexandre Berthier (20 November 1753 – 1 June 1815), 1st Prince of Wagram, Sovereign Prince of Neuchâtel, was a French Marshal and Vice-Constable of the Empire, and Chief of Staff under Napoleon.
Relevant evidence: Yes