 Jacob Isaac Hakkert - BlokBorn 16-4-1831 Vianen, Netherland, died before 1920, at most 89 years. Son of Isaac Jacob Hakkert - Blits and Lea Mozes Blok - Philips Married to:  Caroline Anspacher - VogtBorn 16-1-1817 Buderich, Germany, died 15-3-1895 Vianen, Netherland, 77 or 78 years. Daughter of Susman Anspacher and Frederique Vogt | |
| 2nd marriage Jacob Isaac Hakkert - BlokMarried to: Marianne Levie Cohen van Minden - DeijmBorn 21-2-1851 Amsterdam, Netherland, died 20-9-1920 Amsterdam, Netherland, 68 or 69 years. Daughter of Levie Joseph Cohen van Minden and Raatje Levie Deijm | |