Henry of Monmouth, V (1386–1422, r. 1413–22) married (1420–2) Catherine of Valois (1401-37), had issue:
1. Henry the Mad, VI (1420–, r. 1422–)
2. Edward of Windsor (1420–)
3. William of Kent (1421–)
4. Blanche of England (1422–)
Assuming that all of them live to adulthood, how is the political...