| Descendants of Jacob Cornelisz BLOK and Guurtjr Gerrits KEIJZER
 
  Third Generation 
 
 3.  Marijtje Jans BLOK (Jan Jacobs2, Jacob Cornelisz1) was born in August 1760 in De Rijp, , Noord-Holland, Netherlands, was christened on August 31, 1760 in De Rijp, , Noord-Holland, Netherlands, and died on March 15, 1827 in Krommenie, , Noord-Holland, Netherlands at age 66. Another name for Marijtje was BLOKKER. 
 Marijtje married Gerrit DAL. Gerrit died on December 18, 1800 in Krommenie, , Noord-Holland, Netherlands.
 The child from this marriage was:
   + 4        i. Aagje Gerritsd DAL was born on April 6, 1792 in Krommenie, , Noord-Holland, Netherlands1 and died on June 30, 1868 in Koog aan de Zaan, , Noord-Holland, Netherlands at age 76. 
 
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