| Name | Relationship with Wendy Libby | Civil | Canon |
|---|
| Perkins, Mary | Wife of the 6th cousin 4 times removed | | |
| Persele, Mary Adelaide | Wife of the 5th cousin 3 times removed | | |
| Pettengill, Mary | 1st cousin 9 times removed | XIII | 11 |
| Pettengill, Matthew | 1st cousin 9 times removed | XIII | 11 |
| Pettengill, Nathaniel | 1st cousin 9 times removed | XIII | 11 |
| Pettengill, Richard | Husband of the 8th great-grandaunt | | |
| Pettengill, Samuel | 1st cousin 9 times removed | XIII | 11 |
| Phearsdorf, Georgianna | Wife of the 5th cousin 3 times removed | | |
| Phelps, Cora L. | Wife of the 5th cousin 3 times removed | | |
| Philbrooks | Husband of the 1st cousin 3 times removed | | |
| Philpott, Daniel Allen | 2nd cousin | VI | 3 |
| Philpott, Ken | Husband of the 1st cousin once removed | | |
| Philpott, Kenneth | Husband of the 1st cousin once removed | | |
| Philpott, Tracy | 2nd cousin | VI | 3 |
| Phoenix, Deborah | Wife of the 1st cousin 8 times removed | | |
| Pickering, John | Husband of the 4th cousin 6 times removed | | |
| Plum, Arthur Edwin | Husband of the 6th cousin 3 times removed | | |
| Polly | 5th cousin 5 times removed | XVII | 11 |
| Pool, Jessie M. | Wife of the 5th cousin 3 times removed | | |
| Pool, Polly | Wife of the 4th cousin 6 times removed | | |
| Poore, Sarah | Wife of the 1st cousin 9 times removed | | |
| Pope, Phoebe | Wife of the 4th cousin 5 times removed | | |
| Porter, Edward | 7th cousin 3 times removed | XIX | 11 |
| Porter, Edward Jefferson | Husband of the 6th cousin 4 times removed | | |
| Porter, Elizabeth Savage | Wife of the 3rd cousin 4 times removed | | |
| Porter, Henrietta M. | 7th cousin 3 times removed | XIX | 11 |
| Porter, Huldah | 7th cousin 3 times removed | XIX | 11 |
| Porter, James Gilmore | Husband of the 6th cousin twice removed | | |
| Porter, Nancy | Wife of the 5th cousin 5 times removed | | |
| Porter, William Bruce | 7th cousin 3 times removed | XIX | 11 |
| Potrafke, Margaret | Wife of the 6th cousin twice removed | | |
| Pott, Sarah A. | Wife of the 6th cousin 4 times removed | | |
| Power, Child | 6th cousin twice removed | XVI | 9 |
| Power, Child | 6th cousin twice removed | XVI | 9 |
| Power, Child | 6th cousin twice removed | XVI | 9 |
| Power, Loyal | Husband of the 5th cousin 3 times removed | | |
| Pratt, Sarah | Wife of the 1st cousin 8 times removed | | |
| Prentiss, Ada Spencere | 7th cousin 3 times removed | XIX | 11 |
| Prentiss, Albert Hawley | 7th cousin 3 times removed | XIX | 11 |
| Prentiss, Albert Nelson | 6th cousin 4 times removed | XVIII | 11 |
| Prentiss, Elcina Dutton | 6th cousin 4 times removed | XVIII | 11 |
| Prentiss, Emma Augusta | 6th cousin 4 times removed | XVIII | 11 |
| Prentiss, Jerome Ingersoll | 6th cousin 4 times removed | XVIII | 11 |
| Prentiss, Mary Ellen | 7th cousin 3 times removed | XIX | 11 |
| Prentiss, Mary Jane | 6th cousin 4 times removed | XVIII | 11 |
| Prentiss, Nelson | Husband of the 5th cousin 5 times removed | | |
| Preston, Hannah E. | Wife of the 6th cousin 4 times removed | | |
| Preston, Mary | Wife of the 1st cousin 9 times removed | | |
| Prey, Annie Swett | Wife of the 5th cousin 5 times removed | | |
| Pride, Amy | Wife of the 2nd cousin 7 times removed | | |
