I kid u not, pretty much all the ethnic and cultural social groups of Europe, including even the Scots and the Welsh, were making fun of the Saxons and their seaxes at the time of Charlemagne, only much later, actually at the very time Lord Lumley was reviewing the plans for the Hanover Square development in London, did Friederich Handel manage to improve a tad their image in the eyes of the always pretentious European intellectual crowd with the help of a rather risque operatic concert presented at the International Carnival of Venice in 1709 !) That Hanover region also contained a town, with the same name as the greater region, established there in the middle of the 17th century.
During the 18th century Hanover was joined in an official “personal union” with the United Kingdom. Hanover’s ruler was the same person as the King of the United Kingdom. Even while still engaged in that personal union, in 1803 the territory of Hanover was practically occupied, even annexed by the French, advancing East under the command of Napoleon Bonaparte. After the abdication of Napoleon and hist first exile to Elba, Hanover became independent in 1814 and even became a real kingdom, the Kingdom of Hanover, between 1814 and 1866, initially still in a personal union with the UK. That personal union ended with the ascension of Queen Victoria to the throne in 1837, because of the Salic Law that governed many of the monarchies in Europe, which did not permit females to become monarchs in those various lands which kept appearing and disappearing over time across this continent, so between 1837 and 1866 the king of the Kingdom of Hanover was an uncle of Queen Victoria, Ernest Augustus. He was not well liked by the new class of Hannoverian intellectuals because he wanted to change the Constitution, which he considered too liberal, and even dismissed the brothers Grimm, along 5 other professors, (Dahlmann, a historian and politician, Gervinus, a political and literary historian who wrote the first comprehensive textbook about the history of German literature, Albrecht, a constitutional jurist, Ewald, a theologian and orientalist, and Weber, a physicist scientist, who alongside world famous mathematician Gauss invented one of the the first ergonomically functional electromagnetic telegraphs), all known as the Gottingen Seven, from their professorial positions at the University of Gottingen, because they protested publicly against his political-administrative leadership style. So pretty much most Hannoverians were probably ready at the time to divorce the UK and be annexed by Prussia, (although they initially officially declared war against her, but that was because they were probably in love with her anyway.) Apparently, after WW2, in 1946, the British tried to reinstate a German province named the Land of Hanover, within the same theoretical borders of the earlier Kingdom of Hanover, but the Hannoverians preferred instead to merge with 3 other regions or former small states, (Oldenburg, Brunswick, and Schaumburg-Lippe), into a larger state known as Lower Saxony, while declaring Hanover as the capital of that new state.
From a small fisherman and ferrymen along the river Leine during earlier Medieval times, later more rapidly expanded as a town during the times of the Hanseatic League due to its situation at a relatively busy crossroads for commercial travel over land and water, today’s Hanover is a real city with 1/2 million people (and a little over 1 million counted altogether in the larger metropolitan area). It has sadly lost, maybe forever, its entire Jewish population because not one single rabbi was willing to remain there after 1951, even if some of the survivors of the Bergen-Belsen concentration camp tried to resettle in Hanover and retain a rabbi among them, but he left, and no other was ever willing to replace him. Most of the remaining people left to America. Very few of them had originally been from Hanover anyway, because most of those had been deported to Poland, and obviously couldn’t come back. Plus they had been blamed to have started WW2, or anyway Kristallnacht.