Bertus van der Meulen, born circa 1855.

Bertus was married to
Antje Onsman, born circa 1857 (?).

• 1 : Catharina van der Meulen, born in Harlingen on February 20, 1883.
  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, docker, living in Harlingen, son of Dirk de Groot (workman, docker and dock hand) and Maria Tjerks.