The second Congress of Visegrád was a 1339 summit in

Visegrád Visegrád (; german: Plintenburg; la, Pone Navata or ; sk, Vyšehrad) is a castle town in Pest County, Hungary. It is north of Budapest on the right bank of the Danube in the Danube Bend. It had a population of 1,864 in 2010. The town is the ...

that decided that if Casimir III of Poland died without a son, the King of Poland would be the son of

Charles I of Hungary Charles I, also known as Charles Robert ( hu, Károly Róbert; hr, Karlo Robert; sk, Karol Róbert; 128816 July 1342) was King of Hungary and Croatia from 1308 to his death. He was a member of the Capetian House of Anjou and the only son of ...

, Louis I of Hungary, which is what happened. When Casimir died in 1370 from an injury received while he was hunting, his nephew, Louis I, succeeded him as king of Poland in

personal union A personal union is the combination of two or more states that have the same monarch while their boundaries, laws, and interests remain distinct. A real union, by contrast, would involve the constituent states being to some extent interlink ...

with

Hungary Hungary ( hu, Magyarország ) is a landlocked country in Central Europe. Spanning of the Pannonian Basin, Carpathian Basin, it is bordered by Slovakia to the north, Ukraine to the northeast, Romania to the east and southeast, Serbia to the ...

See also