Hi Cousins, I'm related to Derrick but have some different dates.This was left to me by my grandfather. --Derrick arrived New Amsterdam est. 1636. Wife not mentioned.Children Cornelius, William, Garrett. Went to New Castle in 1656. Justice of Peace in New Castle 1674.Died New Castle, 1682. --Cornelius m. Willmette?Probably adult when arrived with his father.Obtained Dutch patent for 40 morgues of land on Long Island.In 1690 went to New Castle to settle affairs of his father..Sold land.Is called Cornelius Derrickson in one place.Children--Derrick, William, Garret and Elizabeth. --the above William is supposed to be my ancestor b.1668--but if your dob is correct, he would have had to have been Derrick's son and not Cornelius'.Do you have any insight?