Ulf Merbold and Lodewijk van den Berg, both flew in ?
Lodewijk van den Berg Lodewijk van den Berg (] ; born March 24, 1932) is a Dutch American chemical engineer, specializing in crystal growth, who flew on a 1985 Space Shuttle "Challenger" mission as a Payload Specialist.
Jan van den Bergh Jan van den Bergh (1587 in Alkmaar – 1660 in Alkmaar), was a Dutch Golden Age painter.