ABCDEF
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NAMEVARIANTSDIMINUTIVESPRONUNCIATIONMEANING, SOURCE
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1Aberthol“sacrifice”
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2Abloc  
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3AddaAda AH-tha Welsh form of Adam.
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4AdafAddaf AH-daf 
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5Addonwy  
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6Adeonah-DAY-on“wing”
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7AedAedd, Aeddan, Aeddon“fire,” “ardent”
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8AelhaiarnAelhaearn, Alouarn, Elhaearn ile-HAY-arn “an iron brow”
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9Aeron EYE-ronName of a river in Ceredigion.
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10AfanAfen, Afon AH-van “river”, (1) river name, South-east Wales (2) saint’s name - Llanafan
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11Agned AHG-ned 
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12AlanAlun, AlynAL-an"deer", also an early Welsh saint, also a river in Flinshire
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13AlawnAH-lawn“harmony” or “harmony” depending on who you ask.
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14AlbanAlbonAL-bon
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15AldythAldwythAL-dith
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16AldrydAldryddAL-drid
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17AldwynAL-dwin“old friend”
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18AlecAL-ekWelsh form of Alexander.
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19AledAleid AL-edriver name in in Denbighshire (North-east Wales)
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20AlwynAlwin, Elwin, ElwynAL-win“loved by all”
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21Amaethonah-tha
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22Amig AM-ig 
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23AmharAmrAM-harListed as a son of King Arthur in the sagas; vaguely hinted in the stories that he was killed by Arthur and buried in Wales at Licat Amir.
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24AmloddAM-lothAccording to legend, the grandfather of King Arthur.
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25AmrenAM-renThe son of Bedwyr in the King Arthur tales.
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26Anarand AN-arand 
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27Anarawd an-AH-rawdarawd, “host” + an, an intensifying prefix.
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28AndreasAndras, Androsan-DRAY-us“man;” Welsh form of Andrew.
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29AneirinAneurinNeirin, Nyean-AY-rinnar, “noble/modest?”
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30Anfri“disgrace”
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31AngawddThe son of Caw in legends.
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32AnghristAN-grist“antichrist”
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33AngorAN-gor“anchor”
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34AngwynAN-gwingwyn, “white, blessed, holy” + an an intensifying prefix.
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35AnianAnionAN-yan
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36AnirOne of the sons of of King Arthur in the sagas; it’s vaguely hinted in the stories that he was killed by Arthur and buried in Wales at Licat Amir.
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37AnwarAN-war“wild”
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38AnwasAN-wasThe name of the father of Twrch in the ancient legends.
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39AnwilAnwel, Anwell, Anwill, Anwyl, AnwyllAN-wil“beloved”
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40AnwirAN-wir“liar”
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41AnynnawgThe name of the son of Menw in the ancient legends.
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42Anyon“anvil”
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43Ap“son of”
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44ArawnThe god of Annwn an-OON; the Underworld; but not associated with terror or eternal punishment. It later became the underground kingdom of the dead.
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45Arcol  
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46Arddur  
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47Ardwyad“protector”
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48Arglwydd“lord”
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49Arhtudd  
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50ArialAar EE al“strength, courage”
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51Arianah-ree-AHN“silver”
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52Arianvagyl  
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53Arianwynah-ree-AHN-winarian “silver” + gwyn “shining, holy”
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54Arllechwedd  
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55Armagil  
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56Armel  
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57ArnalltAR-nahltWelsh form of Arnold.
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58AronAH-ronWelsh form of Hebrew Aaron.
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59Arthawd  
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60ArthenArthien, Arthian AR-thenarth, “bear;” the name of a Celtic river god.
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61ArthfaelArthmaelARHT-vilearth, “bear;”+ mael, “prince”
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62ArthurArthvawr, ArthwrAHR-thirartos “bear,” or possibly from Latin name Artorius. Name of the legendary king and culture hero of the Welsh, Cornish, and Bretons.
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63Arvan AHR-vahn 
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64ArvelAHR-vuhl“wept over”
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65Arvor AHR-vor 
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66ArwelAHR-wel“prominent”
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67Arwyn AR-wingwyn, “white, blessed, holy, fair” + ar, an intensifying prefix.
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68Arwystli  
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69Asaph  
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70Atha  
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71AthanAH-than
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72Athrywys  
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73AvagduAfagddu“utter darkness,” the son of the goddess Cerridwen and god Tegid Foel.
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74AvalonAffalonAV-a-lon“apple island”
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75AvaonIn Welsh tradition, the name of Taliesin’s son.
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76AwelAwell“breeze”
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77Awen  
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78AwstinAWS-tun“august,” also a version of Austin, a contracted form of the Latin Augustinus.
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79BadenBaddon BAH-dun “one from Baden”
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80BaeddenBadan, BaddenBTE-than“boar”
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81Baines“bones”
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82Barnic  
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83BarriBAHR-eebar “mound, summit, dune,” or perhaps from the word for “boar.”
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84BarrisBarrysBAHR-ees“son of Harry”
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85Barruc  
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86BaudwinOne of the later Knights of the Round Table, he came from Brittany and was a very skilled surgeon. He survived the battle of Camlan, and became a hermit.
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87BedaWelsh version of Bede, a famous monk and historian.
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88Bedo Diminutive the name Maredudd
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89BedwyrBedyvere, BedivereBED-oo-eerThe name of one of King Arthur’s companions to whom he sometimes entrusted Excalibur.
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90BedywThe name of the son of Seithved in ancient tales.
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91BedwynBED-winbedw, “birch-tree” + gwr, “hero.”
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92BelenusBeli, BelinusIrish sun god Bel. In later tales, Beli was the brother-in-law of the Virgin Mary. The original Beli was connected closely with the druids and their rituals. Beltane is his festival, May 1.
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93BellieusA Knight of the Round Table who fought Lancelot over an incident with his wife.
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94Benedigeidfram“blessed,” applied to the god Bran.
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95BercelakT name of the Green Knight in Arthurian stories.
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96BerthThe name of the son of Cadwy in ancient legends.
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97BerwynBarwyn, BerwinA mountain name, in northeast Wales. The place names means "snow-capped."
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98Beuno  
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99BevenBevin, BevynSon of Evan” or “youthful”