١٩٢٩–♂ George D. Whitaker | | |
١٩٣١–١٩٣٢♀ Margaret Rose Whitaker | | |
| | ١٩٠٣–١٩٨١♂ Thomas Alfred Whitaker | | | | ١٨٧٧–١٩٦٨♂ George Whitaker ١٨٧٩–١٩٦٠♀ Emily Elizabeth Wilson |
| | | ١٨٨٠–١٩١٠♀ Emma Roydhouse | | | | ١٨٥٤–١٩٠٠♂ William Clark Roydhouse ١٨٥٥–١٩٣٢♀ Elisabeth Harrison | | | | ١٨٢٢–١٩٠١♂ James Roydhouse | | | | ١٧٧٨–١٨٥٨♂ Thomas Roydhouse | | |
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