Franz Xaver Riedel		FRANZ XAVER RIEDEL(5th Generation) Franz Xaver Riedel, 5th generation (1786-1844) became a famous engraver in his youth. He signed his works of art, which are available at auctions even today. He later became an important entrepreneur, enjoying European demand for his goods. His main success derived from his addition of unknown colours to glass, using Uranium to produce the fluorescent colours, yellow and green, known in the literature as "Annagelb and Annagrün", which he named after his daughter. Franz called upon his nephew Josef Riedel at the age of 14 to work in his company. Johann Christoph Riedel (1st) Johann Carl Riedel (2nd) Johann Leopold Riedel (3rd) Anton Leopold Riedel (4th) Franz Xaver Riedel (5th) Josef Riedel, The Elder (6th) Josef Riedel, The Younger (7th) Walter Riedel (8th) Claus Josef Riedel (9th) Georg Josef Riedel (10th) Laetizia Riedel (11th) Maximilian Josef Riedel (11th)