Although I do not have a Nancy Sipple in my records, she is probably descended from Garret & Mary (Calvert) Sipple both of whom died in Kent County, DE ca 1723.They had 3 sons, Waitman (1673-1772), Christopher ( ??- 1751) & John (??-??).
Waitman had 2 sons, Garrett & Waitman. Christopher had 2 sons, Christopher & Raymond. John had 4 sons, Martinus, Nathaniel, William & Uriah.I am descended from the first Waitman's daughter, Susanna and have not spent a great deal of research on the male lines.
Please let me know if more detailed info might be of any use to you.