Recent research indicates that Gediminids' ancestor may have been Skalmantas. In 1974 historian Jerzy Ochmański noted that "Zadonshchina", a poem from the end of the 14th century, contains a line in which two sons of Algirdas name their ancestors: "We are two brothers – sons of Algirdas, and grandsons of Gediminas, and great-grandsons of Skalmantas." This discovery led to the belief that Skalmantas was the long-sought ancestor of the Gediminids. Ochmański posited that the poem skipped the generation represented by Butvydas, and jumped back to the unknown ancestor. Baranauskas disagrees, believing Skalmantas was Butvydas' brother rather than his father, and that Vytenis and Gediminas were therefore cousins.