@Apázlinemjo
It apears that what I was saying about mithical indoctrination of another nations works on you too. I will give you a fragment about Gelu/Gelou/Gyula:

Gelou in the Gesta Ungarorum

According to the Gesta, on reaching the Carpathian Mountains, the Magyars found there three voivodates: that of Menumorut in Crişana, of Glad in the Banat, and of Gelou in central Transylvania. Duke Gelou is described as being a “certain Romanian”.

And while they tarried there some while, Tuhutum father of Horca, as he was a shrewd man, when he learned from the inhabitants of the goodness of the land of Transylvania, where Gelou, a certain Vlach, held sway, strove through the grace of Duke Árpád, his lord, to acquire the land of Transylvania for himself and his posterity. (…)
—Chapter 24 of The Deeds of the Hungarians - Of the land of Transylvania

It is evident from the Gesta, that Tuhutum’s attack was clearly targeted toward the salt mine district in Transylvania. According to the anonymous author of the Gesta, Transylvania was inhabited by Vlachs and Slavs at that time.

The aforesaid Tuhutum, a most skilful man, sent a certain shrewd man, father of Opaforcos Ogmand, to spy out for him the quality and fertility of the land of Transylvania and what its inhabitants were like, so that he might, if he could, go to war with them, for Tuhutum wished thereby to acquire a name and land for himself. (…) When the father of Ogmand, Tuhutum’s scout, circling like a wolf, viewed, as much as the human gaze may, the goodness and fertility of the land and its inhabitants, he loved it more than can be said and most swiftly returned to his lord. When he arrived, he spoke much to his lord of the goodness of that land: that that land was washed by the best rivers, whose names and advantages he listed, that in their sands they gathered gold and that the gold of that land was the best, and that they mined there salt, and the inhabitants of that land were the basest of the whole world, because they were Vlachs and Slavs, because they had nothing else for arms than bows and arrows and their duke, Gelou was inconstant and did not have around him good warriors who would dare stand against the courage of the Hungarians, because they suffered many injuries from the Cumans and Pechenegs.
—Chapter 25 of The Deeds of the Hungarians - Of the skillfulness of Tuhutum

The Magyar troops lead by Tuhutum defeated Duke Gelou by the river Almaş.

Then Tuhutum, having heard of the goodness of that land, sent his envoys to Duke Árpád to ask his permission to go beyond the woods to fight Duke Gelou. Duke Árpád, having taken counsel, commended Tuhutum’s wish and he gave him permission to go beyond the woods to fight Duke Gelou. When Tuhutum heard this from an envoy, he readied himself with his warriors and, having left his companions there, went forth eastwards beyond the woods against Gelou, duke of the Vlachs. Gelou, duke of Transylvania, hearing of his arrival, gathered his army and rode speedily towards him in order to stop him at the Meseş Gate, but Tuhutum, crossing the wood in one day, arrived at the Almaş river. Then both armies came upon each other, with the river lying between them. Duke Gelou planned to stop them there with his archers.
—Chapter 26 of The Deeds of the Hungarians - How they went against Gelu

Next morning, before daybreak, Tuhutum divided his army in two and he sent one part a little way upstream so that, having crossed the river, they might enter into battle while Gelou’s warriors were yet unawares. And because they had an easy crossing, both forces arrived at the battle at the same time and they fought fiercely, but the warriors of Duke Gelou were defeated and many of them slain and more captured. When Gelou, their duke, saw this, he fled for his life along with a few men. As he was in flight, hastening to his castle beside the Someş River, Tuhutum’s warriors, boldly pursuing Duke Gelou, slew him beside the Căpuş River. Then the inhabitants of the land, seeing the death of their lord, giving the right hand of their own free will chose to themselves as lord Tuhutum, father of Horca, and in that place which is called Esculeu, they confirmed their troth with an oath and from that day the place is called Esculeu, because they swore there. (…)
—Chapter 27 of The Deeds of the Hungarians - Of the death of Gelu