Ivan Reitman, prolific producer and director of films (and of filmmakers), was born in Komárno, Slovakia in 1946.

Komárno has an interesting geographical history:

Komárno is a town in Slovakia at the confluence of the Danube and the Váh rivers. Komárno was formed from part of a historical town in Hungary situated on both banks of the Danube. Following World War I and the Treaty of Trianon, the border of the newly created Czechoslovakia cut the historical, unified town in half, creating two new towns.

So Komárno is on the Slovakian side of the Danube, and Komárom is its Hungarian twin on the other side.