| AP SELYF, Beli | | B. BEF 925 | | |
| AP SOLOR, Gwrawd `Gwent' , of GWENT | | | | |
| AP TASCIOVANUS KING OF BRITAIN, Cunobelinus | | B. 20 | | D. 40 |
| AP TEGFAN, Coel Hen of Rheged | | B. 340 | | D. 19 NOV 420 |
| AP TEGFAN, Guotepauc Gloff | | B. ABT 350 | | D. ABT 400 |
| AP TEGONWY, Bleddud | | B. ABT 760 | | |
| AP TENEFAN, King Cynfelyn Cunobelinus , of CATUVELLAUNI | | B. 20 BC | | D. 41 |
| AP TUDWAL, Dylan Traws of Nant Conwy | | B. ABT 395 | | D. ABT 447 |
| APCYLLIN, Lleiffer Mawr Good Lucius Lucius | | B. ABT 85 | | D. ABT 150 |
| APGWYRYDD, Meurig Cyllin Siluria | | B. ABT 45 | | D. 125 |
| AQUILIUS, Aquilia | | | | |
| ARAIDE, Cas mac Fiachach | | B. 255 | | |
| ARCHEVÊQUE DE ROUEN, Rémigius | | B. 721 | | D. 787 |
| ARCHONTE OF ATHENS, Teisandros II | | | | |
| ARES, Cheimarrhous ben | | | | |
| ARGYLE, Alpin of | | | | |
| ARGYLL, Eacime IV mac Eochaid of | | | | |
| ARGYLL, MacGodrey of | | | | |
| ARGYLL, Unknown Spouse of MacGodfrey of | | | | |
| ARIGHTHACH, Eana | | B. ABT 350 | | |
| ARIMATHEA, Anna Enygeus | | | | |
| ARMBRUSTER, George Edward | | B. 31 JUL 1864 | | D. MAY 1948 |
| ARMENIA, Artavasdes I King Of | | | | |
| ARMENIA, Aryazata Automa of | | | | |
| ARMENIA, Ervand-Orondes King II of | | B. 402 BC | | D. 331 BC |
| ARMENIA, Ghadama of | | B. Abt 85 | | |
| ARMENIA, Mithridates I of | | B. 371 BC | | D. 317 BC |
| ARMENIA, Samos King I of | | B. 306 BC | | D. 241 BC |
| ARMENIA, Xerxes I King of | | | | D. 212 BC |
| ARMODSSON, Kalv | | | | |