"Raynald of Châtillon (c. 1124 – 4 July 1187), also known as Reynald, Reginald, or Renaud, was Prince of Antioch—a crusader state in the Middle East—from 1153 to 1160 or 1161, and Lord of Oultrejordain—a large fiefdom in the crusader Kingdom of Jerusalem—from 1175 until his death, ruling both territories iure uxoris ('by right of wife'). The second son of a French noble family, he joined the Second Crusade in 1147, and settled in Jerusalem as a mercenary. Six years later, he married Princess Constance of Antioch, although her subjects regarded the marriage as a mesalliance."

https://en.wikipedia.org/wiki/Raynald_of_Ch%C3%A2tillon

Notes on his character and personality, via Gemini chatbot:

​Aggressive Ambition and Audacity:

​Raynald was the quintessential "soldier of fortune." Chroniclers describe a man who possessed a restless, almost frantic energy. He was not a cautious strategist; he was a gambler who relied on shock and audacity.
​Contemporaries noted: He had an uncanny ability to seize opportunities. His marriage to Constance of Antioch, which elevated him from a landless knight to a Prince, was seen as a bold (and to some, scandalous) social climb.
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The "Desert Raider":

His interpersonal style was that of a warlord. He preferred the saddle to the court, and his manner was often described as blunt and uncompromising.​

Cruelty and Sadism:

​Perhaps the most consistent trait mentioned by chroniclers—most notably William of Tyre—was Raynald’s capacity for shocking brutality, even toward his own allies.
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The Patriarch of Antioch:

When the Patriarch refused to fund Raynald's military whims, Raynald had the elderly man seized, beaten until he bled, and then covered his head with honey so that insects would torment him in the burning sun.

​Reputation among Muslims:

Arabic chroniclers like Ibn al-Athir viewed him as the "infidel’s" greatest villain. He was seen as a man who took pleasure in the suffering of his captives, often breaking oaths of safe passage to slaughter pilgrims or merchants.

Recklessness and Perceived "Arrogance":
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Raynald’s interpersonal manner was often described as haughty. He famously ignored the advice of King Guy of Lusignan and the diplomatic treaties of the Kingdom of Jerusalem.
​Diplomatic Incendiary: He viewed treaties with Saladin not as legal obligations but as temporary inconveniences. His manner was one of "might makes right," which frequently exasperated other Frankish nobles who favored diplomacy.

​The Red Sea Raid:

His plan to attack Mecca and Medina was viewed by contemporaries as a mix of terrifying brilliance and suicidal madness. It showed a man who did not care for the established "rules" of Mediterranean warfare.

Stoicism and Defiance:

​Even his enemies noted a certain "grandeur" in his defiance. At the Battle of Hattin (1187), after the Crusader army was decimated, Raynald was brought before Saladin.
​The Final Confrontation: Chroniclers record that Raynald remained defiant and unrepentant. When offered his life in exchange for conversion to Islam, he refused with such characteristic bluntness that Saladin executed him personally.
​The Arabic Perspective: While hated, he was respected as a formidable foe. He was the "demon" of the Franks—a man whose personality was so forceful that it effectively steered the course of Middle Eastern history toward the final confrontation at Hattin.

Summary of Character Traits

Temperament: Volatile, energetic, and prone to rage.

Loyalty: Low; prioritized personal gain and military glory over feudal duty.

Religious Zeal: Fierce, but often used as a pretext for plunder and violence.

Interpersonal Tone: Autocratic, dismissive of peers, and physically intimidating.