Across the world, Madog (Madog 
) is an extremely rare epicene first name. More prevalently, Madog is the last name as well as the forename.
| madog ap rhiryd Prince of part of Powys (b. 1050) |
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| cadwallon ap madog Welsh murder victim (b. 1150) |
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| madog ap gruffydd maelor Welsh Prince of Powys Fadog (b. 1191) |
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| madog ap maredudd King of Powys (b. 1200) |
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| madog goch GB (b. 1225) |
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| madog ii ap gruffydd, lord of dinas bran Welsh prince of Powys Fadog (b. 1250) |
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| madog fychan Welsh noble, d. 1269 (b. 1250) |
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| madog fychan Welsh noble, d. 1325 (b. 1250) |
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| madog ap gwallter Welsh poet, GB (b. 1250) |
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| madog crypl Prince of Powys (b. 1275) |
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| madog ap gruffudd 1200 |
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| madog crwm Peerage person ID=468147 |
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| madog ap meurig (est. 1300 - ) |
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| madog ap llywelyn ap gruffudd ap cadwgan Est 1280 - 1331 |
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| madog ab ieuan Peerage person ID=568078 |
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