Leon BenoisLeon or Leonty Nikolayevich Benois was a Russian architect from the Benois family.BiographyHe was the son of architect Nicholas Benois, the brother of artists Alexandre Benois and Albert Benois. He built the Roman Catholic cathedral of Notre-Dame in St Petersburg, the mausoleum of the Grand Dukes of Russia in the Peter and [Paul Fortress], the Russian Chapel in Darmstadt, and the Alexander [Nevsky Cathedral, Warsaw], among many other works. Benois served as Dean of the Imperial [Academy of Arts] and edited the architecture magazine Zodchii. He gave his name to Leonardo [da Vinci]'s painting Benois Madonna which he inherited from his father-in-law and presented to the Hermitage Museum. The painter Nadia Benois was his daughter, and the actor Sir Peter Ustinov was his grandson.