The parents attached to Joan Moon of Bucks County, Pennsylvania appear to lack documentation. She is not named as a daughter in the will of Samuel Burges attached as father. Davis' History of Bucks County postulates that she is the sister of Samuel Burges, not his daughter.
Absent any primary source documentation at this time, should she be removed as daughter of Samuel and made his sister with the notation that the relationship is based on secondary evidence?
It would appear she should be brought under the Penn Project (the husband already is so designated as is Samuel Burges).
Edit: it appears there are very serious issues with entire upstream Burgess lineage. Notations and links are found in Comments on the profiles and I have alerted England project.