 Helena Flapper, daughter of Petrus Jacobs Flapper and Sijke Folkerts "Cecilia" Zijlstra.Born 12 Dec 1889 Workum, died 3 Jul 1979 Amsterdam, age 89 years, buried Amsterdam Married 28 Feb 1924 Amsterdam, age 34 years (married 7 years) to:  Petrus de Jong, age by marriage 32 years, son of Jan de Jong and Marijke Flapper.Born 5 Nov 1891 Bolsward, died 31 Aug 1931 Amsterdam, age 39 years, buried 3 Sep 1931 Amsterdam | |||