Reinder Alders, born in Tjuchem (gem Slochteren).

He was married to
Marie Pesmans.

• 1 : Pieter, born in Tjuchem (gem Slochteren) before 1684.
  He was married in Siddeburen (gem Slochteren) on November 26, 1712 (1) to Aaltijn Klasens, born in Hellum.
  He was married in Siddeburen (gem Slochteren) on May 5, 1726 (2) to Sieke Thies, born in Siddebuursterveen.
  

• 2 : Aldert, born in Siddeburen (gem Slochteren), christened there on August 19, 1688.