Abtei Prüm
In 855, when Lothair I was dying in Prüm Abbey, he divided his kingdom among his three sons with the Treaty of Prüm. To the eldest son, Louis II, went Italy, with the imperial title. To the youngest, Charles, still a minor, went Provence. To the middle son, Lothair II, went the remaining territories to the north of Provence, a kingdom which lacked ethnic or linguistic unity.