So - we have Will evidence she was Agnes Butter, daughter of Thomas Butter, and was called Agnes Rolfe in 1555. Who was her husband?
https://www.wikitree.com/wiki/Butter-186
Agnes wasn't married to Henry Sherman, at the same time Agnes was married to Rolfe, Henry Sherman was married to a Agnes, possibly the daughter of Robert Perpoynt.
It is apparent that Agnes Butter the wife of Rolfe, and Henry Sherman's spouse have been mixed up together, resulting in an overlap of dates and children.
The burial date of 14 October 1580, does not belong to this Agnes, rather it belongs to Henry Sherman's wife. Thomas Butter in his will identifies his daughter Agnes as: "my daughter Agnes Rolfe", in the same will he idenifies Henry Sherman's wife as: "To Henry Sherman's wife." They were two different individuals. [3]
(Note - this Wikitree still identifies her as wife of Henry Rolfe of Hamptworth)