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Joseph Philip Polak, birth 30 Apr 1858 Rotterdam, died 1935, son of Philippus Barend Abraham Polak and Amalia De Jongh
Married 1881 to: Rosalie van Aalten, birth 1858 |
| 1) Philip Polak, birth 5 Aug 1887 Rotterdam, died 15 Aug 1921 |
| 2) Rudolf Polak, birth 9 Apr 1892 Rotterdam |