| Name | Relationship with Natalie Seiwell | Civil | Canon |
| Schonthalmaier, Anna Ilsfeld | 16th great-grandmother | XVIII | 18 |
| Schonthalmaier, Jacob | 17th great-grandfather | XIX | 19 |
| Schonwalter, Barbara Roemer | 13th great-grandmother | XV | 15 |
| Schwab, Anna Elisabeth Wolfharten | 7th great-grandmother | IX | 9 |
| Schwab, Anna Magdalena Wolfharten | 7th great-grandaunt | XI | 10 |
| Schwab, Anna Margaretha Wolfharten | 7th great-grandaunt | XI | 10 |
| Schwab, Anna Maria Wolfharten | 7th great-grandaunt | XI | 10 |
| Schwab, George | 9th great-grandfather | XI | 11 |
| Schwab, George Albrecht Zimmerman | 8th great-granduncle | XII | 11 |
| Schwab, Hans Jorg Wolfharten | 7th great-granduncle | XI | 10 |
| Schwab, Hans Ulrich Wolfharten | 7th great-granduncle | XI | 10 |
| Schwab, Hans Winkelmann | 10th great-grandfather | XII | 12 |
| Schwab, Jakob | 11th great-grandfather | XIII | 13 |
| Schwab, Johann Georg Zimmerman | 8th great-granduncle | XII | 11 |
| Schwab, Johann Jost Zimmerman | 8th great-grandfather | X | 10 |
| Schwab, Johannes Wolfharten | 7th great-granduncle | XI | 10 |
| Schwab, Jost Conrad Wolfharten | 7th great-granduncle | XI | 10 |
| Schwab, Katherine Wolfharten | 7th great-grandaunt | XI | 10 |
| Scogan, Matilda | 24th great-grandmother | XXVI | 26 |
| Scogan, Roger | 25th great-grandfather | XXVII | 27 |
| Segrave, Eleanor Lucy | 22nd great-grandmother | XXIV | 24 |
| 25th great-grandmother | XXVII | 27 |
| Wife of the 7th cousin 22 times removed | | |
| Wife of the 5th cousin 26 times removed | | |
| Wife of the 6th cousin 25 times removed | | |
| Wife of the 6th cousin 27 times removed | | |
| Wife of the 7th cousin 25 times removed | | |
| Wife of the 5th cousin 29 times removed | | |
| Segrave, Gilbert | 24th great-grandfather | XXVI | 26 |
| 27th great-grandfather | XXIX | 29 |
| Segrave, Nicholas Chaucombe | 23rd great-grandfather | XXV | 25 |
| 26th great-grandfather | XXVIII | 28 |
| Seitz, Catharine | 7th great-grandmother | IX | 9 |
| Seiwell, Adeline Kester | 2nd cousin 4 times removed | X | 7 |
| Seiwell, Agnes Jung | 5th great-grandaunt | IX | 8 |
| Seiwell, Alice Kester | 2nd cousin 4 times removed | X | 7 |
| Seiwell, Almira Westpher | 2nd cousin 4 times removed | X | 7 |
| Seiwell, Angeline Koenig | 2nd cousin 4 times removed | X | 7 |
| Seiwell, Anna Margarethe Jung | 5th great-grandaunt | IX | 8 |
| Seiwell, Anna Maria Pennypacker | 4th great-grandaunt | VIII | 7 |
| Seiwell, Anna Theresa Hug | Aunt | III | 2 |
| Seiwell, Anthon Jung | 5th great-granduncle | IX | 8 |
| Seiwell, Anton Or Anthony Pennypacker | 4th great-granduncle | VIII | 7 |
| Seiwell, Arnold Mauck | 1st cousin 5 times removed | IX | 7 |
| Seiwell, Betty Lynn Hug | Aunt | III | 2 |
| Seiwell, Catherine | 1st cousin 5 times removed | IX | 7 |
| Seiwell, Catherine Claton | 2nd cousin 4 times removed | X | 7 |
| Seiwell, Catherine Glass | 3rd great-grandaunt | VII | 6 |
| Seiwell, Catherine Pennypacker | 4th great-grandaunt | VIII | 7 |
| Seiwell, Catherine Westpher | 2nd cousin 4 times removed | X | 7 |