Hielkje Siesling, born circa 1862 (?).

Hielkje was married to
Sybren van Loon, born circa 1857, bridgekeeper.

• 1 : Hans van Loon, born in Harlingen on September 14, 1885.
  

• 2 : Pieter van Loon, born in Harlingen on December 3, 1888.
  

• 3 : Jan van Loon, born in Harlingen on April 25, 1890.
  

• 4 : Feikje van Loon, born in Harlingen on September 11, 1891, died before March 9, 1894, aged at most 2 years.
  

• 5 : Feikje van Loon, born in Harlingen on March 9, 1894.
  Feikje was married in Harlingen on February 24, 1913, at the age of 18 to Dirk van Wier (aged 21 years), born in Harlingen on April 13, 1891, son of Jan Jans van Wier (waggoner's man, waggoner and warehouseman) and Johanna Tigchelaar, bargeman, warehouseman and shopkeeper.
  

• 6 : Dirk van Loon, born in Harlingen on July 29, 1896.