Was there any rulers who wanted to form such an empire throughout history and how far that any of them go towards achieving that goal?
Boudica comes to mind. She united most of the Celtic tribes in Britannia and almost managed to defeat and drive out all of the Romans from there island by genocide and battles.
But that would be a kingdom then a empire at most.
No, because the idea of "Celts" (as a grouping including all speakers of Celtic languages) being a unified category is an 18th/19th century thing - by which time, Britain already existed as a unified state.
Yes. In post-Roman Britain during a period of internecine fighting amongst the Anglo-Saxons, a British leader from northern Wales named himself as the prophesied re-conqueror of the British isles (even naming his heir apparent after king Arthur) and after heavy fighting managed to seize control of all of England. This king's successors would go on to declare their realm to be an imperial one and build one of the most successful and prosperous states in history.Was there any rulers who wanted to form such an empire throughout history and how far that any of them go towards achieving that goal?
It was not really a celtic empire though and he didn't even control Scotland. -_-Yes. In post-Roman Britain during a period of internecine fighting amongst the Anglo-Saxons, a British leader from northern Wales named himself as the prophesied re-conqueror of the British isles (even naming his heir apparent after king Arthur) and after heavy fighting managed to seize control of all of England. This king's successors would go on to declare their realm to be an imperial one and build one of the most successful and prosperous states in history.
His name? Henry Tudor.
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It was not really a celtic empire though and he didn't even control Scotland. -_-
Welsh and Irish aren't even very related languages, so what would actually bind this empire...?
They are more related than the languages of pre-Roman Italy. Empires have bound together and assimilated groups with greater differences.
The Roman Empire wasn't an "Italic empire" like is being proposed here, it was a network of client city states.
Welsh/Britons and Irish/Gaels never considered themselves part of the same people, so what is the basis of this empire?
A few centuries... which means being right next door to Rome for a few centuries. Which means that the Germans are coming over the Rhine. Which means that the Picts are stirring up trouble in the North, and the naked Welsh are all up to no good in the West. Meanwhile, you, King Celt-man, have to deal with being a client king of Rome and not getting swallowed by the Empire, which will eat its clients if there's a hint of unrest.As in the Roman case the basis would be the military strength of whichever tribe or kingdom starts establishing the empire. A few centuries of being part of the empire could then create a common identity. It would not be called the Celtic Empire unless that title was adopted later.
A few centuries... which means being right next door to Rome for a few centuries. Which means that the Germans are coming over the Rhine. Which means that the Picts are stirring up trouble in the North, and the naked Welsh are all up to no good in the West. Meanwhile, you, King Celt-man, have to deal with being a client king of Rome and not getting swallowed by the Empire, which will eat its clients if there's a hint of unrest.
Sorry, but it's not going to happen.
It's called "the Arthur Legend"What about after the Romans leave? A series of Celtic warlords gradually uniting the former province of Britain in opposition to the Anglo-Saxons. Once that is done they could begin the step by step conquest of Scotland and Ireland.
There may be more truth to the Arthur legend than people think. One means of producing steel from iron involved setting an object on a hilltop or other place frequently hit by lightning, and hope that a lightning strike would happen to hit it and convert some of the iron into steel. If Excalibur had been placed on a hilltop, stuck between a couple of rocks with the faint hope of it being turned into a steel blade, it makes sense. Now, if the strike were recent enough, and the original owner hadn't yet returned to check on it, picture Arthur and his buddy strolling up the hill, and spotting a sword sticking upright. Arthurs friend beats him to the sword, and grabs it, only to be knocked back on his posterior by the residual electric charge. Arthur then picks up the blade without any problem, thanks to it already being discharged. Of course, the blade is "magical" in comparison to all of the other local swords, being partially converted to steel.