Judit Fáy was born 1763 to Zsigmond Fáy (c1725-c1790) and Mária Szilassy (c1730-c1800) and died 1825 of unspecified causes. She married László Iszák (c1760-c1820) 2 June 1782 in Lučenec, Lučenec District, Banská Bystrica Region, Slovakia.
Siblings
| Name | Birth | Death | Joined with |
| Zsigmond Fáy (1750-c1751) | 2 November 1750 Losonc, Lučenec District, Banská Bystrica Region, Slovakia | 1751 | |
| Ferenc Fáy (1751-c1752) | 10 October 1751 Losonc, Lučenec District, Banská Bystrica Region, Slovakia | 1751 | |
| Erzsébet Fáy (1753-c1754) | 15 September 1753 Losonc, Lučenec District, Banská Bystrica Region, Slovakia | 1754 | |
| Klára Fáy (1757-c1820) | 26 November 1757 Losonc, Lučenec District, Banská Bystrica Region, Slovakia | 1820 | Ferenc Kántor (c1750-c1820) |
| Sámuel Fáy (1760-1813) | 8 February 1760 Gice, Revúca District, Banská Bystrica Region, Slovakia | 1813 | Klára Jaán (1766-1839) |
| Krisztina Fáy (1762-c1820) | 30 June 1762 Gice, Revúca District, Banská Bystrica Region, Slovakia | 1820 | Mihály Csáczár (c1755-c1810) |
| Judit Fáy (c1763-c1825) | 1763 | 1825 | László Iszák (c1760-c1820) |