Claim: Frantz Jourdain was a Belgian architect and author best known for La Samaritaine, an Art Nouveau department store.
Evidence: Frantz Jourdain (3 October 1847 – 22 August 1935) was a Belgian architect and author. He is best known for La Samaritaine, an Art Nouveau department store built in the 1st arrondissement of Paris in three stages between 1904 and 1928.