You may know Wrocław under its old German name, Breslau, especially if you are one of the German nostalgia tourists who has come to seek their roots. The Polish name Wrocław actually predates the German name, and is thought to have been derived from the name of the Czech sovereign Vratislav. Variants of the German name began appearing in documents shortly after Poland lost control of the region in 1335. Some sources claim that Frederick the Great changed the city’s name to Breslau in 1741, though that is subject to historical dispute. With the German population expelled in 1945, and Poland’s borders shifted westwards, post-war Wrocław was repopulated with citizens from what is now the Ukrainian city of Lviv (formally Polish Lwów). The tens of thousands of migrants who arrived from the east not only changed the ethnic make-up of the city, but also its cultural life. Treasures taken from Lwów and moved to Wrocław include the Fredro statue in the main square, the library collection of the Ossolineum, and the epic painting the Racławice Panorama.