In 1948 the village was renamed Gabčíkovo. Jozef Gabčík was a Slovak soldier from a village near Žilina who parachuted into occupied Czechoslovakia and, with the Czech Jan Kubiš, attacked Reinhard Heydrich in Prague on 27 May 1942; Heydrich died of his wounds, the Germans wiped out the village of Lidice in revenge, and Gabčík was killed in a church crypt on 18 June 1942. He had no connection with this island whatsoever. Collectivisation followed. Then, on 16 September 1977, Czechoslovakia and Hungary signed a treaty to dam the Danube.V roku 1948 dedinu premenovali na Gabčíkovo. Jozef Gabčík bol slovenský vojak z obce pri Žiline, ktorý zoskočil na padáku do okupovaného Československa a spolu s Čechom Janom Kubišom spáchal 27. mája 1942 v Prahe atentát na Reinharda Heydricha; Heydrich na následky zranení zomrel, Nemci z pomsty vyhladili obec Lidice a Gabčík padol 18. júna 1942 v krypte pražského kostola. S týmto ostrovom nemal spoločné vôbec nič. Nasledovala kolektivizácia. A potom, 16. septembra 1977, podpísali Československo a Maďarsko zmluvu o prehradení Dunaja.
