Nom de famille "Seth"
- Privé ✕ Jacob Pleydell-Bouverie (1927 - 2008), Earl of Radnor
Farquharson Seth-Smith
- Mathilde (1826 - 1906) ✕ (1855) Louis van der Straeten (1822 - 1904)
Seth
- Joseph (1831 - ) ✕ Élisabeth Rose Hermance Binet (1831 - )
Seth
- Diana Constance (1921 - 2024) ✕ (1948) Charles Stewart McDonnell Vane-Tempest (1921 - 2008)
- = Diana Constance ✕ (1961) Owen Stanley (1890 - 1974), Viscount Buckmaster, barrister, major in the service of the Home Guard
- = Diana Constance ✕ (1982) Roderick Edward Faure Walker (1914 - 2002)
Seth-Smith
Farquharson Seth-Smith
1 — Privé ✕ Jacob Pleydell-Bouverie (1927 - 2008), Earl of Radnor
Seth
1 — Joseph (1831 - ) ✕ Élisabeth Rose Hermance Binet (1831 - )
2 — Mathilde (1826 - 1906) ✕ (1855) Louis van der Straeten (1822 - 1904)
Seth-Smith
1 — Diana Constance (1921 - 2024) ✕ (1948) Charles Stewart McDonnell Vane-Tempest (1921 - 2008) ✕ (1961) Owen Stanley (1890 - 1974), Viscount Buckmaster, barrister, major in the service of the Home Guard ✕ (1982) Roderick Edward Faure Walker (1914 - 2002)