Back Elinor de Montfort Breton Eleonora z Montfortu Czech Elinor de Montfort Welsh Eleanor de Montfort German Ελεονώρα του Μονφόρ Greek Leonor de Montfort Spanish Éléonore de Montfort French Eleonora di Montfort Italian Leonor de Montfort Portuguese Элеонора де Монфор Russian
| Eleanor de Montfort | |
|---|---|
| Princess of Wales | |
 | |
| Born | 1252 |
| Died | 19 June 1282 (aged 29–30) Aber Garth Celyn, Gwynedd, Wales |
| Spouse | Llywelyn ap Gruffudd |
| Issue | Catherine Gwenllian of Wales |
| House | Montfort |
| Father | Simon de Montfort, 6th Earl of Leicester |
| Mother | Eleanor of England |
Eleanor de Montfort, Princess of Wales and Lady of Snowdon (1252 – 19 June 1282) was an English noblewoman and Welsh princess through her marriage to Llywelyn ap Gruffudd, who was Prince of Gwynedd, and later, Prince of Wales. 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.