Taras Fedorovych

He is initially documented by references in the 1620s to his position as the Cossack Polkovnyk (Colonel) Hassan Tarasa in Hungarian chronicles, noted for considerable cruelty during his participation in the Thirty Year War as a Habsburg mercenary.

[2][3] In March 1630, Fedorovych became the leader of a Cossack and peasant revolt, which became known as the Fedorovych Uprising carried out by the unregistered Cossacks dissatisfied with the conditions of the 1625 Treaty of Kurukove (also known as the Treaty of Lake Kurukove) signed earlier by Doroshenko, which restricted the number of the registry to only six thousand.

[6] About ten thousand rebels proceeded from the Zaporizhian Sich towards the upper Dnieper territories, overrunning the Polish forces stationed there.

Fedorovych's military successes forced Koniecpolski to start negotiations with the Cossack leadership, which resulted in the 1630 Treaty of Pereiaslav.

Meanwhile, the Cossack leadership faction inclined to a compromise with Poland, elected Timofiy Orendarenko whose Hetmanship was confirmed with Koniecpolski's agreement.

Fedorovych, disgruntled with this turn of events, tried to raise the Cossack masses to start a new uprising, but the energy for such an undertaking was no longer forthcoming.

Documentation of most of the details of Taras Fedorovych's life has been lost in time, including the year and circumstances of his death.

The brief period, however, in which he played one of the leading roles in the region's history, established his name as an ancient and lasting source of inspiration to future generations of Ukrainians.

A quatrain of the poem reads: "Nalyvaiko, Zalizniak / And Taras Triasylo / Call us from beyond the grave / To the holy battle".