János Bánffy de Losoncz was born 10 October 1934 in Cluj-Napoca, Cluj County, Romania to László Bánffy de Losoncz (1896-1974) and Ilona Zeyk de Zeykfalva (1909-c1985) . He married Margit Körmendy (1937) 1 May 1961 in Cluj-Napoca, Cluj County, Romania. He married Erzsébet Jósika de Branyicska (1949) 19 January 1974 in Blaj, Alba County, Romania.
Children
| Name | Birth | Death | Joined with |
| Imre László Bánffy Jósika (1974) | 6 April 1974 Blaj, Alba County, Romania | ||
Siblings
| Name | Birth | Death | Joined with |
| János Bánffy de Losoncz (1934-c2000) | 10 October 1934 Cluj-Napoca, Cluj County, Romania | Margit Körmendy (1937) Erzsébet Jósika de Branyicska (1949) | |
| Éva Mária Bánffy de Losoncz (1943-2009) | 19 January 1943 Cluj-Napoca, Cluj County, Romania | 5 July 2009 Cluj-Napoca, Cluj County, Romania | Csaba Györke (1941) |
Residences
Footnotes (including sources)
| ₪ Wedding |
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