People Belgium S. Theissen peoplepill id: siegfried-theissenST 2 views today 8 views this weekS. TheissenBiographyGallery (1)ListsAlso ViewedListsS. Theissen is in following listsBy field of workNotable Belgian people in academiaGender:Male, Born in:Years 1930 to 1969Notable Belgian people in literatureGender:Male, Born in:Years 1930 to 1969By work and/or countryNotable Belgian TeachersGender:Male, Born in:Years 1930 to 1969Notable Belgian AuthorsGender:Male, Born in:Years 1930 to 1969From our partnersSponsoredS. Theissen