Who was born earlier, Franz Viehböck or Jean-François Clervoy?
Franz Viehböck Franz Artur Viehböck (born August 24, 1960 in Vienna) is an Austrian electrical engineer, and was Austria's first cosmonaut. He was titulated "„Austronaut“" by his country's media. He visited the Mir space station in 1991 aboard Soyuz TM-13, returning aboard Soyuz TM-12 after spending just over a week in space.
Franz Thonner Franz Thonner (11 March 1863 – 21 April 1928) was an Austrian taxonomist and botanist from Vienna. In the spring of 1896 he made his first trip to the African interior to explore the botany and people in the northern part of the Congo Basin. Besides his comprehensive collection of plants, he embarked on a thorough ethnographic study of the region.