Maria Altena, born in Balkbrug on August 1, 1935, daughter of Harm Altena and Geertje Blom.

She was married in Avereest on February 20, 1959 to
Roelof Gezinus Maring, born in Warffum on September 19, 1934, son of Harm Maring and Kaatje Hammingh.

• 1 : Gerda, born in Hoogvliet on June 23, 1961.
  She was married in Rhoon on July 24, 1991 to Roelof Plantinga, born in Hoogvliet on September 19, 1962, son of Douwe Plantinga and Hiltje Plantinga.
  

• 2 : Edwin Harry, born in Hoogvliet on May 4, 1963.
  He was married in Spijkenisse on June 21, 1990 to Anne Nyheim, born in Spijkenisse on April 10, 1968, daughter of Torbjorn Nyheim and Ellen Nordby.
  

• 3 : Richard, born in Hoogvliet on July 16, 1966.
  He was married in Geervliet on September 1, 2005 to José Runhart, born in Zuidwolde on September 23, 1975, daughter of Hendrik Runhart and Henrietta Bruins.