Eleanor de Montfort [SEP] date of death
Eleanor de Montfort, Princess of Wales
Eleanor de Montfort, Princess of Wales and Lady of Snowdon (1252 – 19 June 1282) was an English noble. She was the daughter of Simon de Montfort, 6th Earl of Leicester and Eleanor of England. She was also the second woman who can be shown to have used the title Princess of Wales.
Early life.
Eleanor's maternal grandparents were John of England and his queen consort Isabella of Angoulême. 
Her maternal uncles included Henry III of England and Richard
, his Welsh estates needed his presence for their defence against Llewelyn ap Gruffudd.
- Work begins on Caerphilly Castle.
1272
- English bishops Godfrey Giffard and Roger de Meyland negotiate with Llywelyn ap Gruffudd.
- Traditional construction date of fortified stone Monnow Bridge at Monmouth.
1274
- Dafydd ap Gruffydd allies himself with King Edward I of England, and conspires with Gruffydd ap Gwenwynwyn to assassinate Dafydd's brother Llywelyn.
1275
- Following her mother's death, Eleanor de Montfort begins her journey to