The monk, though not explicit about his sources, writes that Miloš was a celebrated figure in the popular traditions of Serbs, who sing about his heroic exploits on the border.
Dejanje kot tako prvi omenja firenški kancler Coluccio Salutati († 1406) v pismu z datumom 20. oktober 1389, ki ga je v imenu firenškega senata poslal bosanskemu kralju Tvrtku I. Kotromaniću.