Sjirk van der Schaaf, born circa 1831, bargeman, worker, bargeman and worker.

Sjirk was married to
Wijpkje Kortekamp, born circa 1849 (?).

• 1 : Hylkje van der Schaaf, born in Heeg on September 13, 1872, died in Velsen on June 14, 1952, aged 79 years.
  Hylkje was married in Wymbritseradeel on April 20, 1895, at the age of 22 to Redmar Feenstra (aged 25 years), born in Workum on September 20, 1869, son of Keimpe Johannes Feenstra (workman, barge hand, sailor, barge hand, barge hand, sailor, workman, workman and sailor) and Pietertje Redmers Bargsma, eel bargeman, died in Heeg on November 2, 1939, aged 70 years.