Ilona was the son of László Bánffy de Losoncz and Katalin Rad. The date and place of his birth have not been found.
Ilona Bánffy de Losoncz
László Bánffy de Losoncz (-1427)
Dénes Losonczi (-1392/93)
Tamás Losonczi (-1366)
Ilona Széchy de Felsőlendva
Péter Széchy de Felsőlendva (-<1336)
Sebe Debrői
Katalin Rad