* 1322 – Bartholomew de Badlesmere, 1st Lord Badlesmere, English soldier ( b. 1275 )

** Mondino de Liuzzi, Italian anatomist ( b. 1275 )

* April 14 – Bartholomew de Badlesmere, 1st Lord Badlesmere, English soldier ( b. 1275 )

* 1275 – Eleanor de Montfort is captured by pirates in the employ of Edward I of England to prevent her marriage to Llywelyn the Last, prince of Wales ; she is used as a bargaining chip over the coming years in Edward's attempts to subjugate Llywelyn and Wales.

* 1275 – Jean de Meun completes the French allegorical work of fiction, Roman de la Rose, with a second section ; the first section was written by Guillaume de Lorris in 1230.

* Humphrey de Bohun, 2nd Earl of Hereford, Constable of England ( d. 1275 )

# Eleanor ( 1215 – 1275 ), who would marry firstly William Marshal, 2nd Earl of Pembroke ; and secondly Simon de Montfort, 6th Earl of Leicester, by whom she had issue.

Peter did not provide for his youngest son and namesake, Peter ( 1275 – 25 August 1296 ), who married Constanca Mendes de Silva, daughter of Soeiro Mendes Petite, governor of Santarém in Portugal.

# Ferdinand de la Cerda, Infante of Castile ( 23 October 1255 – 25 July 1275 ).

* Thomas de Stokes ( 1254 – 1275 ) had been Prior of St James, Bristol.

# Saint Louis of Toulouse ( 9 February 1275, Nocera Inferiore – 19 August 1298, Chateau de Brignoles ), Bishop of Toulouse

His elder brother, Ferdinand de la Cerda, died in November 1275, and in 1282 Sancho assembled a coalition of nobles to declare for him against Ferdinand's son Alfonso, then took control of the kingdom when Alfonso X died in 1284.

* Humphrey de Bohun, 1st Earl of Essex ( d. 1275 )

Around 1275, Jean de Meun composed an additional 17, 724 lines.

Countess Eleanor died in Spring 1275, and shortly afterwards Llywelyn ap Gruffudd, the Prince of Wales, and Eleanor de Montfort married by proxy, ( per nuncios ) per verba de presenti ( Canon law endorsed a marital bond that was made in this way, with the full consent of both of the individuals, before witnesses ).

* Humphrey de Bohun, 2nd Earl of Hereford ( c. 1208 – 1275 ), also 1st Earl of Essex and Constable of England

* Vicedominus de Vicedominis ( 1210 / 15-1276 ) ( 1273, 1275 )

* Bovon de Commarchis ( c. 1275 ), reworking by Adenet le Roi of the Siege de Barbastre

The chanson de geste form was also used in such Occitan texts as Canso d ' Antioca ( late 12th century ), Daurel e Betó ( first half of the 13th century ), and Song of the Albigensian Crusade ( c. 1275 ) ( cf Occitan literature ).

Bohemond died in 1275, leaving a son and three daughters: Bohemond VII, nominal prince of Antioch ( though Antioch had ceased to exist ) and count of Tripoli ; Isabelle de Poitiers, who died young ; Lucia de Poitiers, later titular countess of Tripoli ; and Marie de Poitiers ( d. ca 1280 ), married to Nicolas de Saint-Omer ( d. 1294 ).