It has always been known that THEUNIS JANSZ. PIER, an early settler in New Netherland (New York) was born circa 1600 in Holland.
Chris Brooks and I researched and found Theunis' baptism. His parents' names are now known! We found a great deal on the family -- and our jointly authored article Origins of the Pier Family in the Netherlands and an Update of Their Connection to the Ostrander Family by Lorine McGinnis Schulze and Chris Brooks, was published in the July 2000 issue of the New York Genealogical & Biographical Record. in Deventer, Overijsel, Netherlands.
He married Jannettie Arentsdr. on September 14, 1624 in Amsterdam Netherlands. Theunis Jansz's sons Jan and Arent, were the immigrant ancestors of the PIER family in America.