{{Use mdy dates|date=January 2021}} '''Petrus de Ibernia''', also known as '''Peter of Ireland''', was a 13th-century writer and lecturer who is believed to have taught logic and natural philosophy to Thomas Aquinas.<ref name="irish">{{cite web|last=Barry|first=C. M.|title=Peter of Ireland, Teacher of Aquinas|url=https://www.irishphilosophy.com/2013/07/05/peter-of-ireland/|access-date=June 8, 2020|website=Irish Philosophy}}</ref><ref>{{cite journal|last=Dunne|first=M.|title=Peter of Ireland, the University of Naples and Thomas Aquinas' Early Education|url=https://pdfs.semanticscholar.org/a05c/1fe38bfbea70ffa29536fe47c65b8e869047.pdf|archive-url=https://web.archive.org/web/20200220024531/https://pdfs.semanticscholar.org/a05c/1fe38bfbea70ffa29536fe47c65b8e869047.pdf|url-status=dead|archive-date=February 20, 2020|journal=Yearbook of the Irish Philosophical Society|volume=2006|page=84|access-date=June 8, 2020|s2cid=160634587}}</ref>

Peter of Ireland is mentioned by the Aquinas' biographers Wilhelm of Tocco and Peter Calo.<ref>{{cite journal | jstor=30098834 | title=Peter of Ireland: Teacher of St Thomas Aquinas | last1=Crowe | first1=M. B. | journal=Studies: An Irish Quarterly Review | date=October 25, 2023 | volume=45 | issue=180 | pages=443–456 }}</ref>

==Career== Peter lectured in natural philosophy at the University of Naples during Thomas Aquinas's term of attendance (1239–1244). He was the author of 'Determinatio magistralis', "''on the question that the bodily organs have been created in order that they might carry out their functions, of the functions, created for the benefit of the organs."'' Peter felt this question to be purely a metaphysical one, despite his vocation being natural philosophy.

In 1260 he presided over a dispute on physics held before Manfred of Sicily.

Peter of Ireland studied Moses Maimonides with a Jewish–Christian group in the 1250s.<ref name="irish" />

==His works==

Works attributed to him include

* Two commentaries on Porphyry's Isagoge and the Perihermenias, both logical works * A commentary on Aristotle's 'De longitudine et brevitate vitae', discussing physical questions on the nature and causes of life.

==References== {{reflist}}

==Sources== * Clemens Baeumker, ''Petrus von Hibernia der Jugendlehrer des Thomas von Aquino unde seine Disputation vor König Manfred'', Munich, 1920. * ''A New History of Ireland'', volume one, 2008, pp.&nbsp;960–61.

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{{DEFAULTSORT:Petrus de Ibernia}} Category:12th-century births Category:13th-century deaths Category:Year of birth unknown Category:Year of death unknown Category:Aristotelian philosophers Category:13th-century philosophers Category:Irish writers Category:Philosophers of mind Category:13th-century Irish people Category:13th-century writers Category:Irish expatriates in Italy Category:13th-century Irish writers Category:Natural philosophers Category:Latin commentators on Aristotle

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