Nelly De Heer was born on January 8, 1856 in Dordrecht, Zuid-Holland, Netherlands. She was an actress, known for De vloek van het testament (1915), Gloria transita (1917) and Toffe jongens onder de mobilisatie (deel 1) (1914). She was previously married to Louis van Westerhoven. She died on October 2, 1918 in Amsterdam, Noord-Holland, Netherlands.