Jánossomorja is a town in Győr-Moson-Sopron County, Hungary.
It is a connection between the two villages Szentpéter (German: Sanktpeter) and Szentjános (German: Sanktjohann), located close to the Austrian border.
Before 1946, those were German settlements with the German names St. Johann (St. John) and St. Peter.
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