Manfred and Markus Winkelhock
Manfred (1951-1985) scored two championship points in 47 races. In 1985, at a sports car race in Mosport in Canada fatal accident in Kremer Porsche. Son Markus (born 1980) is still an active driver in the GT series and in 2007 drove one Spyker race: On Nürburgring he even led a few laps thanks to rain tires. Manfred's brother Joachim (never ranked in F1) and Thomas they were successful drivers in touring car races.
Jan and Kevin Magnussen
Jan (born 1973) is still active in endurance series after 25 F1 races in the XNUMXs (one point won). Son Kevin (born 1992) in Formula 1 driving since 2014 (158 points).