 Johannes Willem "Joop" de Kwant, son of Gerrit Jan de Kwant and Leintje Tanneke Schout.Born 02 Dec 1927 Rotterdam, died 04 Jun 1994 Rotterdam, age 66 years. Occupation: machinebankwerker Married/ Related to: Children: 1.  Name Withheld PRIVACY FILTER2. Name Withheld PRIVACY FILTER3. Name Withheld PRIVACY FILTER | |||