Roelof Thijssens de Vries, born circa 1801 (?), died before January 5, 1862, aged at most 61 years.

Roelof was married to
Aaltje Jans Wouda, born circa 1805 (?), died before January 5, 1862, aged at most 57 years.

• 1 : Lammert Roelofs de Vries, born in Nijehaske on August 23, 1828, barge hand and sailor, died before October 30, 1881, aged at most 53 years.
  Lammert was married in Workum on January 5, 1862, at the age of 33 to Jitske Johannes Feenstra (aged 34 years), born in Eernewoude on September 28, 1827, daughter of Johannes Baukes Feenstra (peat cutting supervisor, barge hand, bargeman, eel bargeman, barge hand and eel bargeman) and Antje Gjalts Wester, died in Workum on October 30, 1881, aged 54 years.