Sarah was born to Sarah Jarman Morgan and Squire Boone, Quakers of Berks County, Pennsylvania. She was the elder sister of Daniel Boone, famous frontiersman.

On May 25, 1742 (Recorded: 29 May 1742, Berks County, Pennsylvania) Sarah married John Willcockson. John was a "Worldling", not a Quaker, so this union was "Out of Unity" with the Friends of Chalfont, New Britain, Colony of Pennsylvania. It was the first offense of this kind by a member of the Boone family. Eventually, Sarah and her parents would sever all fellowship with that Meeting House.

Sarah bore 15 children to John, including:

David Willcockson b: October 22, 1742 in Lancaster Co., PA
Nancy Willcockson b: May 17, 1743, in Lancaster Co., PA
John Willcockson , Jr. b: September 6, 1744 in Lancaster Co.,PA
Elizabeth Willcockson b: 1745 in Lancaster Co.,PA
Isaac Willcockson b: 1751 in Lancaster Co.,PA
Israel Willcockson b: 1752 in Rowan Co.,NC
George T. Willcockson b: January 20, 1754 in Rowan Co.,NC
Daniel Willcockson b: March 13, 1754 in Rowan Co., NC
Samuel Willcockson b: February 24, 1755 in Rowan Co.,NC
William "Red" Willcockson b: 1757 in Rowan Co.,NC
Mary Willcockson b: ABT. 1760 in Rowan Co.,NC
Sarah Willcockson b: 1769 in Rowan Co.,NC
Rachel Willcockson b: 1770 in Rowan Co.,NC

(There is some disagreement regarding dates and order of births. Research is ongoing.)

Her great-grandchildren described Sarah (Boone) Willcockson in the "Portrait and Biographical Album of Fulton Co., IL, 1890, pg. 665":

"She was a woman of remarkable mind and possessed a keen sense of justice and an appreciation of all that was good, being, in fact, a remarkable woman. She was the mother of a large family, and when old age, creeping on apace, deprived her of her natural activity, she made her home with her grandson, Jesse Willcockson and there died".

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