Elisabeth Lefferts Annema, born in Suawoude (Gem Tietjerksteradeel) circa 1823.

She was married in Smallingerland on May 3, 1845 to
Willem Sytzes Nijdam, born in Oldeboorn (Gem Uitingeradeel) circa 1804.

• 1 : Pieter, born in Smal-Ee on August 19, 1844, died in Leeuwarden on August 2, 1881.
  He was married in Leeuwarden on July 6, 1868 to Aaltje Feenstra, born in Leeuwarden on March 26, 1847, died there on October 30, 1902, daughter of Wepko Feenstra and Grietje Broersma.
  (She was married afterwards to Johannes Jacobus Tieleman, born in Amsterdam on December 15, 1844, died in Voorburg on June 22, 1912, son of Johannes Jacobus Tieleman and Magdalena Smit. She was married at the same time in Leeuwarden on August 10, 1896 (3) to Bauke van Bateles, born in Leeuwarden on February 9, 1837, died there on January 3, 1905, son of Martinus Hemmes van Bateles and Pietje Jans van der Ark.)
  

• 2 : Sjoerd Willems, born in Uitingeradeel on May 19, 1846.
  

• 3 : Fokje Willems, born in Uitingeradeel on February 10, 1848.
  

• 4 : Gerbrigje Willems, born in Uitingeradeel on March 15, 1849.
  

• 5 : Sijke Willems, born in Uitingeradeel on September 26, 1850.