and convicted spy, made her name synonymous with femme fatale during World War I.]]Mata Hari was the stage name of Margaretha Geertruida (Grietje) Zelle (7 August, 1876, Leeuwarden, The Netherlands – 15 October, 1917, Vincennes, France), a Dutch exotic dancer and courtesan who was executed by firing squad for espionage during World War I.LifeBackgroundMargaretha Zelle was born in Leeuwarden, Friesland in the Netherlands, to Adam Zelle, owner of a hat store, and Antje van