Poland and Lithuania Unite

From Poland: The First Thousand Years, by Patrice M. Dabrowski (Cornell University Press, 2014), Kindle pp. 105-107:

In 1411 a peace between the Polish-Lithuanian state and the Teutonic Order was finally achieved at Toruń. At that time, Jagiełło managed only to secure Žemaitija for Lithuania and Dobrzyń for Poland. Thus, ultimately, Lithuania benefited much more than did the Crown of Poland—somewhat paradoxical in a state that purportedly was dominated by the Polish half. While Lithuania regained all that it sought, the Poles remained unsatisfied. Notably, however, these were the territories that the Order had refused to give Poland-Lithuania to keep the peace only a year earlier. Still, this left many formerly Polish lands along the Baltic coast in the hands of the Teutonic Order, including the important towns of Gdańsk and Toruń. And the Crown of Poland still had no outlet to the sea.

However, in a way, the Battle of Grunwald [= the First Battle of Tannenberg in what is now named Stębark] did have an important outcome for Poland-Lithuania. The joint fight against a common enemy brought the subjects of the two halves of the state closer together, proving to Poles and Lithuanians alike that they had mutual interests. Together, they could accomplish much, even if separately each (especially Lithuania) was weak.

Within a couple of years, Poles and Lithuanians took another step on the road to becoming closer. This was in the so-called Union of Horodło, signed in the Volhynian town of that name in 1413. What had previously been a personal union cemented solely by the person of Jagiełło would now have a solid dynastic connection. To be sure, the position of grand duke in Lithuania would be hereditary (Vytautas agreed to be dux [no modifier], under Jagiełło), while the king of Poland would be elected. But the latter—that is, Jagiełło’s successor—would come from the Lithuanian dynasty, to be elected upon consultation of Vytautas and the Lithuanian boyars.

One of the most interesting provisions of the tripartite document called for a special union of (Catholic) Lithuanian and Polish nobility and clergy. Some fifty years after their conversion to Roman Catholicism, forty-seven Lithuanian noble families were embraced by and included in Polish heraldic clans. In this way, the palatine of Kraków, for example, accepted into his Leliwa clan the palatine of Vilnius. The Polish castellan of Sącz would be united with the Lithuanian castellan of Trakai (Polish: Troki). The numerous Półkozic clan embraced a Lithuanian noble family, while the protoplast [progenitor] of the Lithuanian Radvila family (better known under their Polonized name, Radziwiłł) became part of the Sulima clan. In essence, a joint Polish-Lithuanian noble estate was established. Henceforth, there would be a single nation for the united state.

The Preamble to the Union of Horodło gives evidence of the lofty principles undergirding the union: “Whosoever is unsupported by the mystery of Love, shall not achieve the Grace of salvation. . . . For by Love, laws are made, kingdoms governed, cities ordered, and the state of the commonweal is brought to its proper goal.” The love between the Poles and Lithuanians would truly have a familial (clan) basis now. Yet the union was not complete. It did not include the Orthodox nobility—for the most part, Ruthenes. They were, in a way, second-class citizens—something that would not bode well for the future.