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Maelgwn Gwynedd (Latin: Maglocunus; died c. 547) was king of Gwynedd during the early 6th century. Surviving records suggest he held a pre-eminent position among the Brythonic kings in Wales and their allies in the "Old North" along the Scottish coast. Maelgwn was a generous supporter of Christianity, funding the foundation of churches throughout Wales and even far beyond the bounds of his own kingdom. Nonetheless, his principal legacy today is the scathing account of his behavior recorded in De excidio
After the collapse of Roman authority in Britain, north Wales was invaded and colonized by Gaelic tribes from Ireland. The kingdom of Gwynedd began with the reconquest of the coast by northern Britons under the command of Maelgwn's great-grandfather Cunedda Wledig. Generations later, Maelgwn's father Cadwallon Long-Hand completed the process by destroying the last Irish settlements on Anglesey. Maelgwn was the first king to enjoy the fruits of his family's conquest and he is considered the founder of the medieval kingdom's royal family. He is thus most commonly referenced by appending the name of the kingdom to his own: Maelgwn Gwynedd. By tradition, his llys (English: royal court, literally hall) was located at Deganwy, in the Creuddyn peninsula of Rhos. Tradition also holds that he died at nearby Llanrhos, and was buried there. Other traditions say that he was buried at Ynys Seiriol (English: Island of St. Seiriol, Puffin Island), off easternmost Anglesey. There are no historical records to confirm or deny these traditions. Historical records of this early era are scant. Maelgwn appears in the royal genealogies of the Harleian genealogies, Jesus College MS. 20, and Hengwrt MS. 202. His death in a "great mortality" of 547 is noted in the Annales Cambriae. Tradition holds that he died of the 'Yellow Plague' of Rhos, but this is based on one of the Triads that was written much later. The record says only that it was a "great mortality", which followed the outbreak of the great Plague of Justinian in Constantinople by a few years. Maelgwn was a generous contributor to the cause of Christianity throughout Wales. He made donations to support Saint Brynach in Dyfed, Saint Cadoc in Gwynllwg, Saint Cybi in Anglesey, Saint Padarn in Ceredigion, and Saint Tydecho in Powys. He is also associated with the foundation of Bangor, but hard evidence of this is lacking. In his 1723 Mona Antiqua Restaurata, Henry Rowlands asserts that Bangor was raised to an episcopal see by Maelgwn in 550, but he provides no source for the assertion. The only contemporary information about the person is provided by Gildas, who includes Maelgwn among the five British kings who he condemns in allegorical terms in his De Excidio et Conquestu Britanniae. He says Maelgwn held a regional pre-eminence among the other 4 kings, going on to say that he overthrew his paternal uncle (Latin: avunculus) to gain the throne; that he had taken up life as a monk but then returned to the secular world; that he had been married and divorced, then remarried to the widow of his nephew after being responsible for his nephew's death; and that he was tall.
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What was at Llanrhos?

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Question:
Joshua Lawrence Chamberlain (born Lawrence Joshua Chamberlain, September 8, 1828 - February 24, 1914) was an American college professor from the State of Maine, who volunteered during the American Civil War to join the Union Army. He became a highly respected and decorated Union officer, reaching the rank of brigadier general (and brevet major general). He is best known for his gallantry at the Battle of Gettysburg, for which he was awarded the Medal of Honor. Chamberlain was commissioned a lieutenant colonel in the 20th Maine Volunteer Infantry Regiment in 1862 and fought at the Battle of Fredericksburg.
Chamberlain became most famous for his achievements during the Battle of Gettysburg. On July 2, the second day of the battle, Union forces were recovering from initial setbacks and hastily regrouping into defensive positions on a line of hills south of the town. Sensing the momentary vulnerability of the Union forces, the Confederates began an attack against the Union left flank. Chamberlain's brigade, commanded by Col. Strong Vincent, was sent to defend Little Round Top by the army's Chief of Engineers, Brig. Gen. Gouverneur K. Warren. Chamberlain found himself and the 20th Maine at the far left end of the entire Union line. He quickly understood the strategic significance of the small hill, and the need for the 20th Maine to hold the Union left at all costs. The men from Maine waited until troops from the 15th Regiment Alabama Infantry, commanded by Col. William C. Oates, charged up the hill, attempting to flank the Union position. Time and time again the Confederates struck, until the 20th Maine was almost doubled back upon itself. With many casualties and ammunition running low, Col. Chamberlain recognized the dire circumstances and ordered his left wing (which was now looking southeast, compared to the rest of the regiment, which was facing west) to initiate a bayonet charge. From his report of the day: "At that crisis, I ordered the bayonet. The word was enough." While battlefield conditions make it unlikely that many men heard Chamberlain's order, most historians believe he initiated the charge. The 20th Maine charged down the hill, with the left wing wheeling continually to make the charging line swing like a hinge, thus creating a simultaneous frontal assault and flanking maneuver, capturing 101 of the Confederate soldiers and successfully saving the flank. This version of the battle was popularized by the book The Killer Angels and the movie Gettysburg, but there is debate on the historical validity of this account. Chamberlain sustained two slight wounds in the battle, one when a shot hit his sword scabbard and bruised his thigh, and another when his right foot was hit by a spent bullet or piece of shrapnel. Chamberlain also personally took a Confederate prisoner with his saber during the charge. After initiating the maneuver, he came upon a Confederate Officer wielding a revolver who quickly fired, narrowly missing his face. Chamberlain remained steadfast, and with his sword at the officer's throat accepted the man's arms and surrender. The pistol Chamberlain captured at Gettysburg can still be seen on display in the Civil War exhibit of the Maine State Museum. For his tenacity at defending Little Round Top, he was known by the sobriquet Lion of the Round Top. Prior to the battle, Chamberlain was quite ill, developing malaria and dysentery. Later, due to this illness, he was taken off active duty until he recovered. For his "daring heroism and great tenacity in holding his position on the Little Round Top against repeated assaults, and carrying the advance position on the Great Round Top", Chamberlain was awarded the Medal of Honor.
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What did this cause

Answer:
capturing 101 of the Confederate soldiers and successfully saving the flank.