- Partnership with: Arie MARTIJN
Marriage: 30-07-1873, Amsterdam
- Father: Barend de GROOT
- Mother: Apolonia Wilhelmina (Ploon) LAMPE
- Birth: 3 DEC 1904, Amsterdam
- Residence: Marathonweg 223''', Asd
- Residence: Herculesstr.121''' Asd.
- Residence: Lelystad
- Occupation: machinezetter.
- Death: 20 MAY 1979, Lelystad
- Father: Berend (Bernd Jacobsen\) JACOBSEN
- Mother: Engel ELHART
- Baptism: 28 APR 1727, Ottensen (Altona,Hamburg)
- Residence: Ostdorf op Juist
- Occupation: schipper
- : 12 APR 1755, Dokkum
- Death: 16 NOV 1775, op zee bij Schiermonnikoog
- Father: Berend (Bernd Jacobsen\) JACOBSEN
- Mother: Engel ELHART
- Baptism: 20 NOV 1729, Christianskirche in Ottensen (Hamburg-Altona)
- Residence: 1760,1768, Altona (D), Ostdorf op Juist,
- Occupation: schipper
- Sealing To Child: 26 JULI 1760, Dokkum
- Death: 12 FEB 1811, Juist (Dld)