Sources |
- [S4053] Virginia Historical Genealogies, John Bennett Boddie, (Baltimore, MD: Genealogical Publishing Company, 2009).
- [S4723] "Gilbert de Umfraville," https://en.wikipedia.org/wiki/Gilbert_de_Umfraville, Wikipedia.org.
- [S4724] "Gilbert de Umfraville, Earl of Angus," https://en.wikipedia.org/wiki/Gilbert_de_Umfraville,_Earl_of_Angus, Wikipedia.org.
- [S4725] "Robert de Umfraville, Earl of Angus," https://en.wikipedia.org/wiki/Robert_de_Umfraville,_Earl_of_Angus, Wikipedia.org.
- [S4726] "Umfraville," https://en.wikipedia.org/wiki/Umfraville, Wikipedia.org.
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