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John II Komnenos

John II Komnenos is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand John II Komnenos rather than just read about it. In short: John II Komnenos or Comnenus (Greek: Ἱωάννης Κομνηνός, romanized: Iōánnēs Komnēnós; 13 September 1087 – 8 April 1143) was Byzantine emperor from 1118 to 1143. Also known as "John the Beautiful" or "John the Good" (Greek: Καλοϊωάννης, romanized: Kaloïōánnēs), he was the eldest son of Emperor Alexios I Komnenos and Irene Doukaina and the second emperor to rule during the Komnenian restoration of the Byzantine Empire.

John II Komnenos — main illustration
John II Komnenos — illustration

Key takeaways

  • John II Komnenos belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect John II Komnenos to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of John II Komnenos from memory before moving on to harder problems.

Reference excerpt

John II Komnenos or Comnenus (Greek: Ἱωάννης Κομνηνός, romanized: Iōánnēs Komnēnós; 13 September 1087 – 8 April 1143) was Byzantine emperor from 1118 to 1143. Also known as "John the Beautiful" or "John the Good" (Greek: Καλοϊωάννης, romanized: Kaloïōánnēs), he was the eldest son of Emperor Alexios I Komnenos and Irene Doukaina and the second emperor to rule during the Komnenian restoration of the Byzantine Empire. As he was born to a reigning emperor, he had the status of a porphyrogennetos. John was a pious and dedicated monarch who was determined to undo the damage his empire had suffered following the Battle of Manzikert, half a century earlier. John has been assessed as the greatest of the Komnenian emperors. This view became entrenched due to its espousal by George Ostrogorsky in his influential book History of the Byzantine State, where John is described as a ruler who, "... combined clever prudence with purposeful energy ... and [was] high principled beyond his day." In the course of the quarter-century of his reign, John made alliances with the Holy Roman Empire in the west, decisively defeated the Pechenegs, Hungarians and Serbs in the Balkans, and personally led numerous campaigns against the Turks in Asia Minor. John's campaigns fundamentally changed the balance of power in the east, forcing the Turks onto the defensive; they also led to the recapture of many towns, fortresses and cities across the Anatolian peninsula. In the southeast, John extended Byzantine control from the Maeander in the west all the way to Cilicia and Tarsus in the east. In an effort to demonstrate the Byzantine ideal of the emperor's role as the leader of the Christian world, John marched into Muslim Syria at the head of the combined forces of Byzantium and the Crusader states; yet despite the great vigour with which he pressed the campaign, John's hopes were disappointed by the evasiveness of his Crusader allies and their reluctance to fight alongside his forces. Under John, the empire's population recovered to about 10 million people. The quarter-century of John II's reign is less well recorded by contemporary or near-contemporary writers than the reigns of either his father, Alexios I, or his son, Manuel I. In particular little is known of the history of John's domestic rule or policies.

Physical appearance and character

The Latin historian William of Tyre described John as short and unusually ugly, with eyes, hair and complexion so dark he was known as 'the Moor'. Yet despite his physical appearance, John was known as Kaloïōannēs, "John the Good" or "John the Beautiful"; the epithet referred to his character. Both his parents were unusually pious and John surpassed them. Members of his court were expected to restrict their conversation to serious subjects only. The food served at the emperor's table was very frugal and John lectured courtiers who lived in excessive luxury. His speech was dignified, but he engaged in repartee on occasion. All accounts agree that he was a faithful husband to his wife, an unusual trait in a medieval ruler. Despite his personal austerity, John had a high conception of the imperial role and would appear in full ceremonial splendour when this was advantageous. John was famed for his piety and his remarkably mild and just reign. He is considered an exceptional example of a moral ruler, at a time when cruelty was the norm. He is reputed never to have condemned anyone to death or mutilation. Charity was dispensed lavishly. For this reason, he has been called the Byzantine Marcus Aurelius. By the example of his personal morality and piety he effected a notable improvement in the manners of his age. Descriptions of him and his actions indicate that he had great self-control and personal courage, and was an excellent strategist and general.

Early life John was born on 13 September 1087, the third child and first son of Emperor Alexios I Komnenos and his wife Irene Doukaina. Joannes Zonaras describes John's birth, "And then a son was born to the emperor, who was honoured with the holy baptism in the holy church of Hagia Sophia by the Patriarch. He was named John and his father then crowned him with a diadem". At a young age he was associated with his father as co-emperor, sometime between 1 September and early November, 1092. The first act in the name of both emperors was issued on 15 November 1092. The occasion of John's elevation was celebrated by a special issue of coins with his parents depicted on the reverse and John crowned by Christ on the obverse. Alexios I arranged a dynastic marriage for John. In 1104 or early 1105 John was married to the Hungarian princess Piroska, daughter of King Ladislaus I of Hungary. She was given the Greek name Irene, meaning 'peace', in Byzantium. This marriage sealed a political alliance, which would strengthen Byzantium's position in the Balkans and Adriatic. In 1106 Alexios I was campaigning against the Serbs, most probably accompanied by his son John. At this time John's wife was heavily pregnant, she was with her husband on campaign, giving birth to twins, Alexios and Maria, in Balabista, Macedonia. The question arises as to why the birth was not in Constantinople. It is reasonably supposed that John did not wish to leave his unsupported wife under the control of his mother, who would have had authority in Constantinople in the absence of both emperors. In 1108, the Treaty of Devol recorded the submission of the defeated Bohemond I of Antioch to " ... the great Emperor Kyr[ios] Alexios Komnenos and of your thrice-loved son, Emperor Kyr John born in the purple". This leaves no doubt as to John's status as co-emperor and heir apparent.

Accession to the throne

… excerpt ends here. Continue reading the full article.

Illustrations

John II Komnenos illustration
John II Komnenos illustration
John II Komnenos: John II Komnenos – a conjectural digital replacement of facial features damaged on the original mosaic in Hagia Sophia
John II Komnenos – a conjectural digital replacement of facial features damaged on the original mosaic in Hagia Sophia
John II Komnenos: John II (left) and his eldest son Alexios, crowned by Christ. Minuscule 157, early 12th century
John II (left) and his eldest son Alexios, crowned by Christ. Minuscule 157, early 12th century
John II Komnenos: Isaac Komnenos, mosaic of from the Chora Church
Isaac Komnenos, mosaic of from the Chora Church

Worked examples

Example 1 — a first encounter with John II Komnenos

Start with the simplest possible case. Write down what John II Komnenos claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to John II Komnenos before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about John II Komnenos ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of John II Komnenos

In research
John II Komnenos appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses John II Komnenos in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
John II Komnenos is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1087 births, 1143 deaths, Burials at the Monastery of Christ Pantocrator (Constantinople), so understanding it makes those chapters shorter.
In everyday life
Look for John II Komnenos outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study John II Komnenos in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what John II Komnenos means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain John II Komnenos out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is John II Komnenos in simple terms?

John II Komnenos or Comnenus (Greek: Ἱωάννης Κομνηνός, romanized: Iōánnēs Komnēnós; 13 September 1087 – 8 April 1143) was Byzantine emperor from 1118 to 1143. Also known as "John the Beautiful" or "John the Good" (Greek: Καλοϊωάννης, romanized: Kaloïōánnēs), he was the eldest son of Emperor Alexios…

Why does John II Komnenos matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study John II Komnenos?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on John II Komnenos.

Tags

  • 1087 births
  • 1143 deaths
  • Burials at the Monastery of Christ Pantocrator (Constantinople)
  • Byzantine people of the Byzantine–Pecheneg wars
  • Byzantine people of the Byzantine–Seljuk wars
  • Byzantine people of the Crusades
  • Deaths by arrows
  • Deaths by poisoning
  • Deaths from sepsis
  • Family of Alexios I Komnenos
  • Hunting accident deaths
  • John II Komnenos

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