1991–♂ Riley Richard Nelson | | |
| | 1957–♀ Wendy Helm Roydhouse | | | | 1929–2003♂ Richard Helm Roydhouse 1930–1987♀ Lois Lorraine Pope | | | | 1887–1974♂ Arthur Payton Roydhouse | | | | 1856–1926♂ William Francis Roydhouse | | |
| | | 1849–1903♀ Mary Ann Bryant | | |
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| | | 1902–1951♀ Dorothy K. E. Groves |
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