Ewch i’r prif gynnwys
Josef Lossl

Yr Athro Josef Lossl

Athro Diwinyddiaeth Hanesyddol a Hanes Deallusol, Cyd-Bennaeth Hanes a Chrefydd yr Henfyd

Ysgol Hanes, Archaeoleg a Chrefydd

+44 29208 75499
Adeilad John Percival , Ystafell Adeilad John Percival, Ystafell 5.28, Rhodfa Colum, Caerdydd, CF10 3EU


Research interests

  • Early Christianity
  • Greek and Latin Patristics
  • History of Biblical and Philosophical Exegesis (commentaries)
  • Intellectual History (the 'Platonic Tradition')
  • Religion and Violence
  • Augustine of Hippo
  • Jerome of Stridon

Research projects

  • Tatian's Ad Graecos: A Second-Century Greek Apology in its Cultural Context
  • Patristic Exegesis of Romans 1-3
  • Narrative, System and Ritual in Classical and Modern Cosmologies

Research groups























Book sections




My research is in the field of Greek and Latin Patristics and in Early Christian studies. My interest is in the way early Christian and Patristic texts convey historical, biblical, philological, philosophical, theological and scientific learning. I am also interested in the rhetorical and literary forms and transformations of these texts. I am pursuing, among others, the following themes and projects:

Julian of Aeclanum and the Hirpini in Late Antiquity

Having already published extensively on Julian of Aeclanum I am continuing to undertake research on various aspects of his life, writings, thought, and reception with the aim of producing a comprehensive study of this fascinating figure of late-antique Latin Christianity.

Tatian, Ad Graecos / To the Greeks. Translation with introduction and commentary

The aim of this project, which falls under the theme of "Philosophy and Religion in Second-Century Christianity", is to produce a comprehensive commentary, with introduction and new translation, of this second-century Greek apology in the series Kommentar zu den frühchristlichen Apologeten.

Biblical and Philosophical Exegesis in Late-Antique Latin

This project is part of the Latin and Syriac Commentary Project. It consists of a number of ongoing projects on Biblical and Philosophical exegetes and their work including Jerome, Marius Victorinus, Victorinus of Pettau, Augustine, Pelagius and Julian of Aeclanum, and aims at a comprehensive study of late-antique Biblical and Philosophical Exegesis in Latin. In connection with this project I am working towards a Patristic commentary of Romans 1-3 for the series Novum Testamentum Patristicum.

Classical and Early Christian Historiography

This project is closely linked with my contribution to the Encyclopedia of the Medieval Chronicle-project. I am interested in the origins of historiography and in links between Ancient Classical, Biblical, and early Christian historiography and between 'histories', 'chronicles' and other forms of historiography (including 'lives', 'letters', 'commentaries' etc.).

Various Themes in early Christian and Late-Antique Religion

I am also engaged in a number of studies, some already published, some awaiting publication, which touch upon a variety of issues concerning religion in Late Antiquity, and especially Christianity:

  • Consolation: The transformation of a genre in Late Antiquity
  • Narrative, system and ritual in ancient cosmologies and their reception
  • The role of memory in the formation of Christian identity
  • Identity and violence in early Christianity
  • History and prophecy


I am a member of the following research groups and centres:


  • RT1343 Monotheism from Moses to Freud
  • RT4208 The Early Church: History and Memory
  • RT3201 Hellenistic Greek I
  • RT3202 Hellenistic Greek II
  • RT3107 Introduction to New Testament Greek
  • RT3108 Further New Testament Greek

Teaching profile

  • I teach on the history, and in particular the intellectual history, of Christianity and related religions, with a focus on Classical and Late Antiquity.
  • I also teach Classical and Hellenistic (New Testament) Greek.

Postgraduate students

I am supervising or co-supervising the following PhD projects:

  • Esterson, Zachary  Victorinus of Pettau and His Commentary on the Book of Revelation
  • Jupp, William  The Writings and Historical Portrayal of Arsenios the Great
  • Leonard, Victoria  Imperial Authority and the Providence of Monotheism in Book Seven of Orosius'Historia adversus paganos
  • Shepherd, Robyn  Orthodox Trinitarian Theology Then and Now: John Zizioulas and His Appeal to the Patristic Tradition


Education and qualifications

  • PhD Theology (Historical Theology), University of Regensburg (1996)
  • PhD Habil. History of the Early Church, Patristics and Christian Archaeology, University of Münster (2001)
  • Certificate in Learning and Teaching in Higher Education, University College London (2003)

Career overview

  • 1996-2000 Postdoctoral Fellow, Theology (Early Christianity and Patristics), King's College London
  • 2000-2002 Junior Fellow, Theology (Patristics and Church History), Catholic University Leuven
  • 2002-2003 Humboldt-Fellow, Classics (School of Greek and Latin), University College London
  • 2003-2006 Lecturer, Theology (Patristics and Late Antiquity), Cardiff University
  • 2006-2006 Senior Lecturer, Theology (Patristics and Late Antiquity), Cardiff University
  • 2006-2010 Reader, Theology (Patristics and Late Antiquity), Cardiff University
  • 2010-        Professor, Historical Theology, Intellectual History (Patristics and Late Antiquity), Cardiff University

Anrhydeddau a dyfarniadau

  • EON Prize for outstanding PhD of the year, University of Regensburg, 1996
  • Postdoctoral Award, Deutsche Forschungsgemeinschaft (DFG), 1997
  • Visiting Junior Fellowship, Catholic University Leuven, 2000
  • Alexander-von-Humboldt Fellowship, 2002
  • Visiting Senior Fellowship, Excellenz-Cluster 'Religion und Politik', University of Münster, 2010

Aelodaethau proffesiynol

  • Senior Fellowship, Higher Education Academy (HEA)
  • Fellowship, Alexander-von-Humboldt Foundation
  • Member, Association internationale des études patristiques (AIEP)
  • Member, Faith and Order Committee, Methodist Church of Great Britain

Safleoedd academaidd blaenorol

  • 2010-       Athro, Diwinyddiaeth Hanesyddol, Hanes Deallusol (Patristeg a Hynafiaeth Hwyr), Prifysgol Caerdydd
  • 2006-2010 Darllenydd, Astudiaethau Crefyddol a Diwinyddiaeth (Patristeg a Hynafiaeth Hwyr), Prifysgol Caerdydd
  • 2006-2006 Uwch Ddarlithydd, Astudiaethau Crefyddol a Diwinyddiaeth (Patristeg a Hynafiaeth Hwyr), Prifysgol Caerdydd
  • 2003-2006 Darlithydd, Astudiaethau Crefyddol a Diwinyddiaeth (Pediatreg a Hynafiaeth Hwyr), Prifysgol Caerdydd
  • 2002-2003 Cymrawd Ymchwil Humboldt, Clasuron (Ysgol Groeg a Lladin), Coleg Prifysgol Llundain
  • 2000-2002 Cymrawd Ymchwil Iau, Diwinyddiaeth (Patristeg a Hanes yr Eglwys), Prifysgol Gatholig Leuven
  • 1996-2000 Cymrawd Ymchwil Ôl-ddoethurol, Diwinyddiaeth (Cristnogaeth Gynnar a Phediatreg), Coleg y Brenin Llundain
  • 1993-1996 Myfyriwr Ymchwil PhD, Diwinyddiaeth (Cristnogaeth gynnar), Prifysgol Regensburg

Pwyllgorau ac adolygu

  • Golygydd Gweithredol, Vigiliae Christianae: Adolygiad o Bywyd ac Iaith Gristnogol Gynnar
  • Bwrdd Golygyddol, Vigiliae Christianae Supplements
  • Rheolwr Golygydd, Journal for Late Antique Religion and Culture
  • Bwrdd golygyddol, Studia Patristica
  • Golygydd Cyswllt, Journal of Late Antiquity
  • adolygydd cymheiriaid, The Journal of Theological Studies, The Journal of Ecclesiastical History, Journal of Early Christian Studies, Journal of Ancient Christianity, Augustinianum, Augustiniana (Leuven), Adamantius, Millennium-Studien, Gwasg Prifysgol Rhydychen, Gwasg Prifysgol Caergrawnt, Bloomsbury Academic, Gwasg Prifysgol Caeredin