[4] In 1076, Bolesław II the Bold, with the support of Pope Gregory VII, regained the royal crown but was later excommunicated and banished from the kingdom in 1079 for murdering his opponent, Bishop Stanislaus of Szczepanów.
[5] Unlike Władysław I, Bolesław III proved to be a capable leader who restored the full territorial integrity of Poland but ultimately was not able to obtain the royal crown due to continued opposition from the Holy Roman Empire.
Henry II, continued his father's efforts, but the first Mongol invasion in 1241 and his death at the Battle of Legnica, abruptly halted the unification process.
[7] Following a vacancy that lasted until 1320, the Kingdom of Poland was fully restored under Władysław I the Elbow-High, who was crowned at the Wawel cathedral in Kraków, and then subsequently strengthened by his son Casimir III the Great, who expanded into Red Ruthenia.
Casimir III is the only Polish king to receive the title "Great", and his reign was marked by substantial developments in the kingdom's urban infrastructure, civic administration, and military strength.
The agreement also heralded a change in the legal status of the Polish realm to that of a Crown of the Kingdom of Poland, which was a political concept that assumed unbroken unity, indivisibility and continuity of the state.
After the conclusion of the union, Queen Jadwiga married Grand Duke Jogaila, who was crowned as King Władysław II Jagiełło on 4 March 1386, an event that marked the beginning of the Jagiellon dynasty.