I seem to be having trouble trying to reply to the above post. I will try again, starting with JOHN.
3 JOHN. Born 10 June, 1266. He died 1 or 3 August 1271/2. He is buried in Westminster Abbey.
4. HENRY. Born 13th July 1267/8. He died 14th October, 1274.
5. Alice No birthdate but the Harleian MSS said that she died at the age of 12.. Some historians have identified her with the child born to the King and Queen in March 1279, but this cannot be correct as that infant's funeral at Westminster Abbey took place during the same year. (see ISABELLA below).
6 JULIANA or KATHERINE. She was born in 1271 at Acre in Palestine and died there on 28th May or 5th September. She is perhaps the daughter buried in the Church of the Friars Preachers, Bordeaux, Gascony.
7. JOAN. She was born in the Spring, 1272 at Acre, palistine. Joan died 23rd April, 1307, at her manor of Clare, Suffolk and was buried in the Priory Church of the Austin Friars, Clare, Suffolk.
8. ALFONSO. He was born 24th November, 1273. He was perhaps designated Earl of Chester in 1284. He died 14 or 19 August, 1284 at Windsor Castle and buried in Westminster Abbey.
9. MARGARET. was born 11 September 1275 at Windsor Castle. MARGARET died in 1318, and is buried in the Collegiate Church of St Gudule, Brussels.
10. BERENGARIA or BERENICE3. Born in 1276 at Kempton Palace, Surrey, and died between 1276 and 1279 and buried in Westminster Abbey.
11. MARY was born on 11th March or 22nd April, 1278 at Windsor Castle. She died before 8th July, 1332 at Amesbury Abbey, where she is buried. Mary was a nun.
12. ISABELLA. was born 12 march, 1279. She died in 1279 and buried at Westminster Abbey.
13. ELIZABETH was born in August 1282, at Rhuddlan Castle, Flintshire, Wales. Elizabeth died on c 5th May, 1316 during childbirth, at Quendon, Essex and buried at Walden Abbey, Essex
14. EDWARD 11 was born 25th April, 1284 at Caernarvon Castle, Wales. He was murdered on 21 September, 1327 and is buried at Gloucester Cathedral.
15. BEATRICE. She was born after August, 1286. She died young.
16 BLANCHE was born in 1289/90 and died young.
I hope that this has been of some help.