Ymkjen Sietzema, born circa 1866 (?), died after January 14, 1909, aged at least 43 years.

Ymkjen was married to
Hendrik Hornstra, born circa 1848, merchant, died before January 14, 1909, aged at most 61 years.

• 1 : Jeltje Hornstra, born in Nijehaske on August 31, 1889, died on July 9, 1916, aged 26 years.
  Jeltje was married in Harlingen on January 14, 1909, at the age of 19 to Klaas Tigchelaar (aged 22 years), born in Harlingen on June 21, 1886, son of Anne Tigchelaar (workman, municipal worker and municipal worker) and Taetske de Vries (maid servant), carpenter's man and carpenter, died in Warnsveld on January 1, 1966, buried there on January 5, 1966, aged 79 years.
  Klaas was married afterwards in Kwadijk on May 6, 1917, at the age of 30 to Neeltje Kriek (aged 32 years), born in Sint Pancras on November 10, 1884, died in Warnsveld on March 1, 1947, buried there on March 5, 1947, aged 62 years. Neeltje was widow of N.N.. Klaas was married afterwards in Zutphen on October 11, 1950, at the age of 64 to Johanna Holmer (aged 53 years), born in Warnsveld on July 5, 1897, daughter of Jan Albert Holmer and Alberta Hummelman, died there on November 18, 1981, buried there on November 21, 1981, aged 84 years. Johanna was married before in Zutphen on September 19, 1924, at the age of 27 to Hermanus Roskam (aged 28 years), born in Zutphen on January 29, 1896, died there on September 19, 1924, aged 28 years.