Dmytro Dedko

Dmytro is mentioned in number of scientific works on history of that period such as "History of Ukraine-Ruthenia" by Mykhailo Hrushevsky, "Die polnische Geschichtschreibung des Mittelalters" by Heinrich Ritter von Zeissberg and others.

[1] Among the most solid historical benchmarks signed by Dmytro in 1341 is a document "Letter to residents of Torun" that survived to our days where he calls to revive economical and social relationships between the city of Toruń and Halychyna.

During the Polish-Hungarian aggression against the Kingdom of Ruthenia, Dmytro successfully defended governed territory with support of his brother-in-law Liubartas.

With the death of Dmytro and agreement with the Khan of Golden Horde Janibeg, Casimir III occupied Halychyna in 1349.

Ukrainian writer Volodymyr Bilinsky argues that Dmytro Dedko is not a "Galician boyar", but rather a true Lord of Ruthenia and a son of Yuriy I of Galicia.