1284: Blwyddyn
12g - 13g - 14g 1230au 1240au 1250au 1260au 1270au - 1280au - 1290au 1300au 1310au 1320au 1330au 1279 1280 1281 1282 1283 - 1284 - 1285 1286 1287 1288 1289
Digwyddiadau
- 3 Mawrth - Statud Rhuddlan yn gosod y drefn Seisnig newydd ar Gymru
Genedigaethau
Marwolaethau
- 17 Ionawr - Alexander, Tywysog yr Alban, 19
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