Prince Eugen of Bavaria (German: Eugen Leopold Adelaide Thomas Maria Prinz von Bayern) (16 July 1925 – 1 January 1997) was a member of the Bavarian Royal House of Wittelsbach.
Eugen's older sister was Princess Amalie Isabella of Bavaria, born 1921.
Countess Helene was previously married to Prince Konstantin of Bavaria, who lost his life in a plane crash on 30 July 1969.
The civil ceremony took place in Munich and the religious wedding followed five days later in Innsbruck, Austria.
Prince Eugen of Bavaria died on 1 January 1997 at Grasse in the Alpes-Maritimes region of France.