Bertus van der Meulen, born circa 1855.

Bertus was married to
Antje Onsman, born circa 1860 (?).

• 1 : Catharina van der Meulen, born in Harlingen on February 20, 1883, died there on October 4, 1961, aged 78 years.
  Catharina was married in Harlingen on July 7, 1902, at the age of 19 to Rienk de Groot (aged 20 years), born in Harlingen on March 5, 1882, son of Dirk de Groot (dock hand, docker, docker, docker, workman, dock hand, dock hand, workman, dock hand, dock hand, dock hand and scheepssjouwerman) and Maria Tjerks, docker, died in Harlingen on December 31, 1984, aged 102 years.
  

• 2 : Inte van der Meulen, born in Harlingen on April 22, 1884, died before February 12, 1890, aged at most 5 years.
  

• 3 : Minke van der Meulen, born in Harlingen on August 25, 1885.
  

• 4 : Cornelia van der Meulen, born in Harlingen on December 14, 1887.
  

• 5 : Inte van der Meulen, born in Harlingen on February 12, 1890.
  

• 6 : Betje van der Meulen, born in Harlingen on May 20, 1892.
  

• 7 : Andries van der Meulen, born in Harlingen on October 24, 1895.