Medley of two folk war lament songs, which are written to the same melody, and even a part of the lyrics is the same: Irish Bantry Girl’s Lament and Slovene Oblaki so rdeči. Both became popular during early 20th century (Spanish Civil War and WW1), but at least for Bantry Girl's Lament there's proof of it being a much older song, so it's possible the transmission occurred some time, perhaps during Napoleonic wars.