István Bartha was born 29 January 1901 in Târgu Secuiesc, Covasna County, Romania to Gyula Bartha (1873-1913) and Teréz Kovács (1877-1929) and died 13 February 1965 Buenos Aires, Argentina of unspecified causes. He married Ágnes Bánffy de Losoncz (1913-1979) 30 November 1950 in Montevideo, Uruguay.
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