Isabelle Plancke
At the French national championships she competed in the 200 metre breaststroke event in 1926 and finished fourth. The next year, in 1927 she won the bronze medal. In 1928 she competed in the qualifying events for the 1928 Summer Olympics. She also participated in other swimming competitions and also competed with Mouettes de Paris in water polo matches, together with her sister Yolande Plancke.