All over the world, Gruffydd (Gruffydd 
) is a very rare boy's first name. The forename Gruffydd is characteristic of Northern Europe, particularly the United Kingdom, where it is a rare male name. Also, Gruffydd is the last name as well as the forename.
| gruffydd ap cyngen prince of Powys in Wales of the Early Middle Ages (b. 750) |
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| gruffydd ap llywelyn Welsh monarch, GB (b. 1000) |
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| cadwallon ap gruffydd Prince of Gwynedd, GB (b. 1090) |
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| gruffydd ap rhys Prince of Deheubarth, died 1137, GB (b. 1090) |
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| gruffydd fychan ap iorwerth Welsh knight and marcher lord (b. 1150) |
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gruffydd ap llywelyn fawr Son of Llywelyn the Great, GB (b. 1200) |
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| gruffydd ap rhys ii Welsh prince, died 1201, GB (b. 1160) |
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| cadell ap gruffydd Prince of the kingdom of Deheubarth, GB (b. 1200) |
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| cadwaladr ap gruffydd King of Gwynedd (b. 1200) |
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| gruffydd maelor i Prince of Powys Fadog (b. 1200) |
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| gruffydd ii ap madog, lord of dinas bran Welsh Prince of Powys Fadog (b. 1236) |
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| gruffydd ap rhys Welsh nobleman, died c. 1267, IE (b. 1250) |
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| gruffydd ap gwenwynwyn Prince of Kingdom of Powys (b. 1250) |
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| gruffydd ap maredudd (b. 1300) |
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| gruffydd young Bishop of Ross, GB (b. 1370) |
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