Revisions and Additions:
Richard II of England (b.1367: d.1403) m. Anne of Bohemia (b.1366: d.1394) (a), Mary of Burgundy (b.1386) (b)
I also pushed the revolt a couple years forward and married Richard off a second time, which I sort of felt would happen. Yes, he has two sons but he would still want more spares if they could be found. And Mary of Burgundy would fit if he wanted a young bride to help with France without marrying a child and I'm surprised it wasn't considered OTL. And by doing this we can get a second daughter more suitable to marry to Orleans.
Richard II of England (b.1367: d.1403) m. Anne of Bohemia (b.1366: d.1394) (a), Mary of Burgundy (b.1386) (b)
1a) Edward IV of England (b.1383) m. Isabella of Valois (b.1389) (a)
5b) Mary of England (b.1401) m. Henry, 3rd Duke of Lancaster (b.1386: d.1424) (a) Charles, 2nd Duke of Orleans (b.1394) (b)
I still think that, under the circumstances and the fact that every other option is quite a bit younger than her, Isabella (b.1385) would be a good match for Ferdinand I of Aragon. 1a) John II of England (b.1403) m. Jacqueline, Countess of Hainaut (b.1401: d.1436) (a) *annulled in 1432*, Bonne of Savoy (b.1415) (b)
3a) Blanche of England (b.1408)
4a) George of England (b.1410: d.1411)
5a) Joan of England (b.1413) Philip the Good, Duke of Burgundy (b.1396: d.1467) (a)
2a) Isabella of England (b.1385) m. Ferdinand I of Aragon (b.1380: d.1421) (a) 1a) Margaret of England, 2nd Countess of Hainaut (b.1420) *not created illegitimate after parent's annulment
2a) John of England (b.1421: d.1421)
3b) Richard III of England (b.1435)
4b) Henry of England, Duke of Bedford (b.1438)
6b) Lionel of England, Duke of Gloucester (b.1441)
7b) Thomas of England, Duke of Kent (b.1444)
8b) Edward of England (b.1450: d.1452)
2a) Thomas of England (b.1404: d.1404)2a) John of England (b.1421: d.1421)
3b) Richard III of England (b.1435)
4b) Henry of England, Duke of Bedford (b.1438)
6b) Lionel of England, Duke of Gloucester (b.1441)
7b) Thomas of England, Duke of Kent (b.1444)
8b) Edward of England (b.1450: d.1452)
3a) Blanche of England (b.1408)
4a) George of England (b.1410: d.1411)
5a) Joan of England (b.1413) Philip the Good, Duke of Burgundy (b.1396: d.1467) (a)
1a) Anthony, Count of Charolais (b.1431)
2a) Charles of Burgundy (b.1434)
3a) Louis of Burgundy (b.1437)
4a) John of Burgundy (b.1438: d.1441)
5a) Michelle of Burgundy (b.1442)
6a) Thomas of Burgundy (b.1447: d.1454)
6a) Isabella of England (b.1417: d.1417)2a) Charles of Burgundy (b.1434)
3a) Louis of Burgundy (b.1437)
4a) John of Burgundy (b.1438: d.1441)
5a) Michelle of Burgundy (b.1442)
6a) Thomas of Burgundy (b.1447: d.1454)
1a) Alfonso of Aragon (b.1400)
2a) John of Aragon (b.1402)
3a) Eleanor of Aragon (b.1405)
4a) Peter of Aragon (b.1409)
5a) Sancho of Aragon (b.1412: d.1414)
6a) Henry of Aragon (b.1414)
7a) Maria of Aragon (b.1417)
8a) Beatrice of Aragon (b.1420)
3a) John of England, Duke of Clarence (b.1389) m. Marie of Brittan (b.1391) (a) 2a) John of Aragon (b.1402)
3a) Eleanor of Aragon (b.1405)
4a) Peter of Aragon (b.1409)
5a) Sancho of Aragon (b.1412: d.1414)
6a) Henry of Aragon (b.1414)
7a) Maria of Aragon (b.1417)
8a) Beatrice of Aragon (b.1420)
1a) Joan of Clarence (b.1412)
2a) Catherine of Clarence (b.1414)
3a) Matilda of Clarence (b.1415)
4a) Henry of Clarence (b.1418)
4a) Thomas of England (b.1392: d.1393)2a) Catherine of Clarence (b.1414)
3a) Matilda of Clarence (b.1415)
4a) Henry of Clarence (b.1418)
5b) Mary of England (b.1401) m. Henry, 3rd Duke of Lancaster (b.1386: d.1424) (a) Charles, 2nd Duke of Orleans (b.1394) (b)
1a) Henry, 4th Duke of Lancaster (b.1414)
2a) Edward of Lancaster (b.1419)
3a) Margaret of Lancaster (b.1423: d.1424)
4b) Louis, 3rd Duke of Orleans (b.1427)
5b) Joan of Orleans (b.1430)
6b) Marie of Orleans (b.1432)
7b) Charles of Orleans (b.1435: d.1436)
2a) Edward of Lancaster (b.1419)
3a) Margaret of Lancaster (b.1423: d.1424)
4b) Louis, 3rd Duke of Orleans (b.1427)
5b) Joan of Orleans (b.1430)
6b) Marie of Orleans (b.1432)
7b) Charles of Orleans (b.1435: d.1436)
I also pushed the revolt a couple years forward and married Richard off a second time, which I sort of felt would happen. Yes, he has two sons but he would still want more spares if they could be found. And Mary of Burgundy would fit if he wanted a young bride to help with France without marrying a child and I'm surprised it wasn't considered OTL. And by doing this we can get a second daughter more suitable to marry to Orleans.