Peter of Ickham
Peter of Ickham( died 4 May 1295), was an English chronicler.
Peter Cellensis
Peter Cellensis, also known as Peter of Celle, Peter of Celles, Pierre de Celle and Peter de la Celle,( c. 1115 in Troyes – 20 February 1183, at Chartres) was a French Benedictine and bishop.
Peter of Dusburg
Peter of Dusburg( died after 1326), also known as Peter of Duisburg, was a Priest- Brother and chronicler of the Teutonic Knights.
He is known for writing the" Chronicon terrae Prussiae", which described the 13th and early 14th century Teutonic Knights and Old Prussians in Prussia.
Ramon Berenguer IV, Count of Barcelona
Ramon Berenguer IV (c. 1114 – 6 August 1162, Anglicized Raymond Berengar IV), sometimes called the Saint, was the Count of Barcelona who brought about the union of his County of Barcelona with the Kingdom of Aragon to form the Crown of Aragon.
Peter of Chichester
Peter of Chichester was the Dean of Wells during 1220.
Peter of Bergamo
Peter of Bergamo also called Peter of Almadura( 1400 ca.- 1482) was an Italian Dominican theologian.
Peter of Rates
Saint Peter of Rates, also known in English as Saint Peter of Braga, is traditionally considered to be the first bishop of Braga between the years 45 and 60.
Tradition says he has been ordered to preach the Christian faith by Saint James the Great, and that Peter of Rates was martyred while attempting to make converts to the Christian faith in northern Portugal.
The ancient" Breviary of BragaBreviarium Bracarense") and the" Breviary of Evora" hold that St. Peter of Rates was a disciple of St. James and preached at Braga.
However, the Bollandists argue that this claim is" purely traditional."
Michael Barr (mathematician)
Michael Barr( born January 22, 1937) is Peter Redpath Emeritus Professor of Pure Mathematics at McGill University.
Peter of Auvergne
Peter of Auvergne( died 1304) was a French philosopher and theologian.
He was a canon of Paris; some biographers have thought that he was Bishop of Clermont, because a Bull of Boniface VIII of the year 1296 names as canon of Paris a certain Peter of Croc( Cros), already canon of Clermont; but it is more likely that they are distinct.
Peter of Auvergne was in Paris in 1301, and, according to several accounts, was a pupil of Thomas Aquinas.
In 1279, while the various nations of the University of Paris were quarrelling about the rectorship, Simon de Brion, papal legate, appointed Peter of Auvergne, to that office; in 1296 he was elected to it.
Peter of Barcelona
Peter of Aragon (4 May 1152 - c.1164) was the oldest child of Queen Petronilla of Aragon and her husband, Ramon Berenguer IV, Count of Barcelona.
He inherited, after his father's death, Cerdagne, Carcassone and Narbonne.
Not much information about Peter survives, but it is known for sure that he existed.
The "Corónicas Navarras" names all of Petronilla's children, in order, as "don Pedro…el rey don Alfonso,
que ovo nombre Remón Belenguer et el conte don Pedro de Provença
et el conte
don Sancho et a la muller del rey don Sancho de Portugal".
Peter was named Count of Cerdanya, Carcassonne and Narbonne.
Some sources state that Peter died in 1157, sometime after King Alfonso VII of León and Castile died.
This year of death is also likely since the third son, also named Peter, was born in 1158.
It is certain that the elder son Peter was dead by 18 July 1164, as his mother abdicated in favour of his younger brother, Ramon, rather than Peter, who had been named heir of Aragon at birth.
The "Corónicas Navarras" also stated that Peter died in Huesca.

Question: What nationality is Peter Of Barcelona's father?
Answer: County of Barcelona