The quotes below come from a press release about a thesis on the Unetice culture by Gothenburg University archeologist Dalia Pokutta. The thesis, titled "Population Dynamics, Diet and Migrations of the Únetice Culture in Poland", was defended successfully earlier this month, and if it's going to appear online it'll probably be here. By the way, ancient DNA results (including Y-DNA, mtDNA and autosomal DNA) from the Unetice samples analysed by Pokutta are on the way (see here).
'Over 3800 years ago, a young male, possibly born in Skåne, made a journey of over 900 kilometers south, to Wroclaw in Poland. He died violently in Wroclaw, killed by Úněticean farmers, possibly due to romance with two local females, who were murdered together with him. This 'Bronze Age love story', with no happy end today is the first case of Swedish-Polish contacts in history ever', concludes archaeologist Dalia Pokutta, author of the thesis. ... 'It is the biggest isotopic project undertaken in Poland so far. We analysed hundreds of samples, not only human bones, but also animals. This study deals with the humans of a long-forgotten past and figuratively speaking, it has been written by the hands of fifty dead people. This story leads us to the first Europe of metals and the beginnings of the Bronze Age world, but above all to past societies and their members. The results of the analyses went beyond our wildest dreams or expectations' says Dalia Pokutta. ... One of the leading conclusions is a very high level of territorial mobility of the prehistoric population in Silesia, with presence of immigrants from Germany, Czechia, Hungary and Sweden. The study also confirms massive changes in European agriculture around year 2000 B.C, like the introduction of manuring on large scale. 'My study aims at a new dimension of bioarchaeology, presenting the archaeological culture through the life histories of the people: skilled astronomers and star-gazers, talented metallurgists, farmers, explorers, merchants and barrow builders; the people who laid the foundations of the first Europe of metals and the Bronze Age world', says archaeologist Dalia Pokutta.Source: Proof of human migration from Sweden to Poland during the Early Bronze Age