Is False Dmitry 1 considered a protege of Poland?

Yes, he can be considered a protege of Poland, since the Polish king supported him financially and militarily. Together with False Dmitry 1 in 1604, 4 thousand Polish mercenaries came to the territory of Russia. Over time, the impostor was able to enlist the support of the peasants and thus, he captures the capital of the country – Moscow. Of course, not everyone liked that the Polish henchman became the new ruler of the country, but False Dmitry 1 promised a lot to everyone. Nevertheless, over time it became clear that he would not fulfill his promise and the boyars killed him.