| 2. | Jacoba Crama (Maria Piekaar1) was born 20 Apr 1875 in Leiden, So-Holland, , Netherlands, and died 12 Nov 1929 in Leiden.
She married Gijsbert Lagerman 10 Jul 1901 in Leiden, So-Holland, , Netherlands, son of Martinus Lagerman and Hermijntje Heemskerk.
He was born 2 Nov 1873 in Mijdrecht, Utr., Nthr, and died 7 Jan 1939.
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| Children of Jacoba Crama and Gijsbert Lagerman are:
| | 3 | i. | Martinus Lagerman was born 1 Jul 1902 in Leiden, So-Holland, , Netherlands, and died 13 May 1905 in Leiden. |
| | 4 | ii. | Martinus Lagerman was born 24 Mar 1906 in Leiden, So-Holland, , Netherlands, and died 29 May 1953 in Leiden. |
| | 5 | iii. | Pieter Johannes Lagerman was born 17 Apr 1918 in Leiden, So-Holland, , Netherlands, and died 10 Sep 1975. |
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