١٨٩٦–١٩٧٠♂ George Thomas Roydhouse ١٨٩٧–١٩٨١♀ Alice May Gladys Bertrand | | | | ١٨٧٢–١٩٤٧♂ George Joseph Roydhouse ١٨٧٤–١٩٤٥♀ Ada Louise Maycock | | | | ١٨٤٤–١٩١٨♂ Joseph Thomas Roydhouse ١٨٤٤–١٩٣٠♀ Charlotte Pocock | | | | ١٨١٦–١٨٤٩♂ Thomas Henry Roydhouse | | | | ١٧٧٢–١٨٥١♂ Thomas Roydhouse | | |
| | | ١٧٧٢–١٨٣٣♂ William Anstiss |
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| | | ١٨٤٥–١٩٢٠♂ William Maycock ١٨٤٦–١٩٢٨♀ Mary A. Thomas | | | | ١٨١٥–١٨٧٦♂ Benjamin Maycock |
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| | | ١٨٧٢–١٩١٥♂ John Edward Bertrand |
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