Some more of my thoughts, this time for Edward II
Edward II of England (b. 1284: d.1320) m Margaret of France (b. 1288 d.1319)
1a) Edward III of England (b.1304 d.1370)
1b) Joanna of England (b. 1306 d.1346)
1c) John of Eltham, Earl of Cornwall (b. 1308 d. 1338)
1d) Eleanor of England (b.1312 d. 1372)
1e) Henry of England, Earl of Derby (b. 1316 d. 1369)
The marriage between Edward II and Margaret of France, eldest daughter of Philip IV of France, occurs in 1303 as part of a peace process between England and France to resolve the issues of Gascony.