Roelof Jansen was born about 1601 in Marstrand, Norway and died in 1636 in New Amsterdam, New Netherland. He married Anneke (Annetji) Jans, daughter of Johan (?) and Trijntje Roelofs (Jonas), on April 18, 1623. She was born after 1604 in Flekkeroy, Norway and died before February 23, 1663 in Albany, New York.

Sarah Roelofs Jansen, daughter of Roelof Jansen and Anneke (Annetji) Jans, was born before April 5, 1627 in Amsterdam, Netherlands and died after July 29, 1693 in New Amsterdam, New Netherland. She married Hans Kierstede on June 29, 1642. He was born about 1612 in Magdeburg, Germany and died after May 15, 1666 in New Amsterdam, New York.

Roelof Kierstede, son of Hans Kierstede and Sarah Roelofs Jansen, was born before January 1, 1647 in New Amsterdam, New York and died after November 16, 1685 in Kingston, New York(?). He married Eyke Roosa, daughter of Aeldert Heymans Roosa and Wilhelmina (Wyntje) Ariens De Jongh, about 1670. She was born in 1651 in Netherlands and died in 1665 at the age of 14.