This was SVN commit r4841.

binaries/data/mods/official/entities/units/celt_hero_boudicca.xml

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+<?xml version="1.0" encoding="iso-8859-1" standalone="no"?>
+
+<Entity
+	Parent="template_unit_hero"
+>
+	<Traits>
+	
+		<Id>
+		
+			<Specific>Boudicca</Specific>
+
+			<Civ>Celts</Civ>
+
+			<History>Ammianus Marcellinus described how difficult it would be for a band of foreigners to deal with a Celt if he called in the help of his wife. For she was stronger than he was and could rain blows and kicks upon the assailants equal in force to the shots of a catapult. Boudicca, queen of the Iceni, was said to be 'very tall and terrifying in appearance; her voice was very harsh and a great mass of red hair fell over her shoulders. She wore a tunic of many colours over which a thick cloak was fastened by a brooch.</History>
+		
+		</Id>
+		
+	</Traits>
+
+	<Actor>units/celts/boudicca.xml</Actor>
+
+</Entity>

binaries/data/mods/official/entities/units/celt_hero_brennus.xml

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+<?xml version="1.0" encoding="iso-8859-1" standalone="no"?>
+
+<Entity
+	Parent="template_unit_hero"
+>
+	<Traits>
+	
+		<Id>
+		
+			<Specific>Brennus</Specific>
+
+			<Civ>Celts</Civ>
+
+			<History>Brennus is the name which the Roman historians give to the famous leader of the Gauls who took Rome in the time of Camillus. According to Geoffrey, the brothers invaded Gaul and sacked Rome in 390 B.C., "proving" that Britons had conquered Rome, the greatest civilization in the world, long before Rome conquered the Britons. We know from many ancient sources which predate Geoffrey that Rome was indeed sacked in 390 B.C., and that the raid was led by a man named Brennus, but he and his invading horde were Gallic, not British. In this episode several features of Geoffrey's editing method can be seen: he modified the historical Brennus, created the brother Belinus, borrowed the Gallic invasion, but omitted the parts where the Gauls seemed weak or foolish. His technique is both additive and subtractive. Like the tale of Trojan origin, the story of the sack of Rome is not pure fabrication; it is a creative rearrangement of the available facts, with details added as necessary. By virtue of their historical association, Beli and Bran are often muddled with the earlier brothers Belinus and Brennus (the sons of Porrex) who contended for power in northern Britain in around 390 BC, and were regarded as gods in old Celtic tradition.</History>
+		
+		</Id>
+		
+	</Traits>
+
+	<Actor>units/celts/brennus.xml</Actor>
+
+</Entity>

binaries/data/mods/official/entities/units/celt_hero_britomartus.xml

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+<?xml version="1.0" encoding="iso-8859-1" standalone="no"?>
+
+<Entity
+	Parent="template_unit_hero"
+>
+	<Traits>
+	
+		<Id>
+		
+			<Specific>Britomartus</Specific>
+
+			<Civ>Celts</Civ>
+
+			<History> The story of how Marcus Claudius Marcellus killed a Gallic leader at Clastidium (222 BC) is typical of such encounters. Advancing with a smallish army, Marcellus met a combined force of Insubrian Gauls and Gaesatae at Clastidium. The Gallic army advanced with the usual rush and terrifying cries, and their king, Britomartus, picking out Marcellus by means of his badges of rank, made for him, shouting a challenge and brandishing his spear. Britomartus was an outstanding figure not only for his size but also for his adornments; for he was resplendent in bright colours and his armour shone with gold and silver. This armour, thought Marcellus, would be a fitting offering to the gods. He charged the Gaul, pierced his bright breastplate and cast him to the ground. It was an easy task to kill Britomartus and strip him of his armour.</History>
+		
+		</Id>
+		
+	</Traits>
+
+	<Actor>units/celts/britomartus.xml</Actor>
+
+</Entity>

binaries/data/mods/official/entities/units/celt_hero_caradoc.xml

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+<?xml version="1.0" encoding="iso-8859-1" standalone="no"?>
+
+<Entity
+	Parent="template_unit_hero"
+>
+	<Traits>
+	
+		<Id>
+		
+			<Specific>Caradoc</Specific>
+
+			<Civ>Celts</Civ>
+
+			<History>Caradoc's name is better known in its Romanized form, Caratacus. Under this name he is remembered as a fierce defender of Britain against the Romans after their invasion in 43 AD. Son of King Cynvelin of the Catuvellauni tribe, Caradoc fought for nine years against the Romans with little success, eventually fleeing to the tribes in Wales, where he was defeated decisively. Finally he entered Northern Britain, where was handed over to the Romans. Taken to Rome, Caradoc was allowed to live by the Emperor Claudius and died in Italy.</History>
+		
+		</Id>
+		
+	</Traits>
+
+	<Actor>units/celts/caradoc.xml</Actor>
+
+</Entity>

binaries/data/mods/official/entities/units/celt_hero_cynvelin.xml

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+<?xml version="1.0" encoding="iso-8859-1" standalone="no"?>
+
+<Entity
+	Parent="template_unit_hero"
+>
+	<Traits>
+	
+		<Id>
+		
+			<Specific>Cynvelin</Specific>
+
+			<Civ>Celts</Civ>
+
+			<History>Cynvelin was a powerful ruler centered in the territory around modern day London. Ruling the Catuvellauni from Camulodunum, he was a warrior king who conquered a neighboring tribe and was referred to by the Romans as the King of the Britons. Eventually Cynvelin retired to become the arch-druid of Siluria, but was taken to Rome with his son upon Caradoc’s capture. According to legend, the Apostle Paul baptized Cynvelin into Christianity before he died in Italy.</History>
+		
+		</Id>
+		
+	</Traits>
+
+	<Actor>units/celts/cynvelin.xml</Actor>
+
+</Entity>