István was the son of László Gyerőmonostori but his mother is unknown. The date and place of his birth have not been found.
He died before 23 NOV 1461. The place is not known.
He had two marriages/partners. His first wife was Ilona Harangláby. They were married, but the date and place have not been found. They had no known children.
His second wife was Katalin Kémeri. They were married, but the date and place have not been found. Their six known children were Mihály (?-<1471), István (?-?), Péter (?-?), Márta (?-?), Anna (?-?) and Margit (?-?).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Death | BEF 23 NOV 1461 |
|
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | Erdélyi alvajda |