Descendancy Chart:
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RoelofHelderman (I230)
Birth 23 September 188432
26 -- Deventer
Death 30 March 1950 (Age 65) -- Alkmaar
1Civil Marriage 15 May 1912 -- Alkmaar
MarijtjeHoekmeijer (I429)
Birth 15 February 189140
29 -- Alkmaar
Death 24 November 1978 (Age 87) -- Alkmaar
Number of Children: 6 Bertha JacobaHelderman (I225)
Birth 27 February 191530
24 -- Alkmaar
Death 9 August 1987 (Age 72) -- Alkmaar
1 . 1FrederikHelderman (I226)
Birth 27 July 191328
22 -- Alkmaar
Death 1 April 1986 (Age 72) -- Alkmaar
1 . 2JacobHelderman (I228)
Birth 4 April 191732
26 -- Alkmaar
1 . 3Marijtje JacobaHelderman (I229)
Birth 19 April 192338
32 -- Alkmaar
1 . 4RoelofHelderman (I231)
Birth 6 January 192237
30 -- Alkmaar
1 . 5ZwaantjeHelderman (I232)
Birth 12 January 192035
28 -- Alkmaar
1 . 6