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Jan Harms BlaakMale ‎(I02550)‎
Birth 2 November 1835 -- Hoogezand, Hoogezand-Sappemeer, Groningen, Netherlands
Death 26 April 1905 (Age 69) -- Oude Pekela, Pekela, Groningen, Netherlands

Son
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Harm BlaakMale ‎(I03498)‎
Birth 10 September 1867 -- Bedum, Bedum, Groningen, Netherlands
Death 24 November 1937 (Age 70) -- Bedum, Bedum, Groningen, Netherlands

Son
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Jan BlaakMale ‎(I04515)‎
Birth 25 March 1897 -- Stedum, Loppersum, Groningen, Netherlands
Death 27 October 1975 (Age 78) -- Bedum, Bedum, Groningen, Netherlands