Pieter Van ES and his wife Triyntje Meijer are in several tree's on the iternet........Dont know how much copying of tree's is going on which is often tim,es the case but while several people know the ancestors of Triyntje Meijer no one has a handle on Pieter and his childrn vary.....you might want to contrate your searches on the male children's names as oone of the names is probably the father of Pieter.........If there was a complete compilation of all the childrens names that would narrow down you search. Good luck.