 Petrus de Jong, 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 Married 28 Feb 1924 Amsterdam, age 32 years (married 7 years) to:  Helena Flapper, age by marriage 34 years, 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 | |||