Surname Monmouth (Monmouth 
) , all over the world, is a very rare family name. The surname Monmouth is characteristic of Australia, where it is a very rare surname, Israel, and the United States. Not in comparison with a country's population, it is commonest in the United States, Australia, and the United Kingdom. Very seldom, Monmouth is the forename as well as the last name.
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| Monmouth | United States, Israel, United Kingdom, Australia |
| hawise of monmouth Anglo-Norman noble, GB (b. 1050) |
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geoffrey of monmouth British cleric and historiographer, GB (b. 1100) |
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| rohese of monmouth Welsh noble (b. 1135) |
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| john of monmouth Anglo-Norman feudal lord born in Wales, GB (b. 1182) |
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| thomas of monmouth Welsh writer, GB (b. 1200) |
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| john of monmouth Bishop of Llandaff (b. 1250) |
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| sarah elizabeth harper monmouth (b. 1829) |
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| joan de monmouth (est. 1203 - after Nov 1247) |
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| john of monmouth Feudal lord in the Welsh Marches, died 1257 |
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| john monmouth Monmouth, John of (c.1182–1248), baron |
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| john de monmouth Peerage person ID=831 |
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Of, Dennis, Darren, Glenda, Lauren, Judson, Elbert, Ernest, Evelyn, Wilmer, Wilria, Weldon, Marilyn, Melissa, Michael, Angella, Cheresa, Carolyn, Cesaleigh, Kamaria, Pearlie, Reynard, Reuben, Parsha, Kendra, Audrey, Mary, Matt, Rose, Rita, Dawn, Leon, Lisa, Joan, Nami, Emma, Jeffrey, Audry, Daisy, Dylan, Larry, Linda, Jared, Jason, Nikki, Elvin, Ebony, Melvin, Karen, and Theresa