Sigismund of Luxembourg vs Yuri Dolgorukiy

Sigismund, King of Hungary and son of Charles IV, was elected King of Germany by one faction of electors, while Jobst of Moravia was elected by another. This led to a double kingship until Jobst's death in 1411.

Sigismund convened the Council of Constance to end the Western Schism. The council deposed all three rival popes and elected Pope Martin V, restoring unity to the Catholic Church.

Despite granting Jan Hus a safe-conduct to the Council of Constance, Sigismund allowed Hus to be tried and burned at the stake for heresy. This act sparked the Hussite Wars in Bohemia.

Sigismund was crowned Holy Roman Emperor in Rome by Pope Eugene IV. His coronation marked the end of a long struggle for imperial recognition and solidified his authority.

Yuri Dolgorukiy invited Prince Sviatoslav Olgovich to a meeting at a place called 'Moscow' in the chronicles. This first written mention of Moscow is traditionally considered the founding date of the city.

Yuri Dolgorukiy launched a campaign to seize the throne of Kiev from his nephew Iziaslav. He captured Kiev in 1149 and ruled briefly, but was expelled in 1151. He finally secured Kiev in 1155, ruling until his death.

Yuri Dolgorukiy ordered the construction of a wooden fortress (kremlin) on Borovitsky Hill in Moscow. This fortification became the nucleus of the future Moscow Kremlin and the city's defensive core.

Yuri Dolgorukiy died suddenly after a feast in Kiev, suspected of being poisoned by the Kievan boyars. His death ended his rule and led to a revolt against his administration in Kiev.