Szijjártó published the details of his father and grandfather because a Szijjárto appeared in the agent files

Péter Szijjártó shared personal details of his father, grandfather, and uncle on social media without explanation. His father is István József Szijjártó, born in Budapest, and his mother is Gabriella Bacsilla. His uncle is Gábor Szijjártó, also born in Budapest. His grandfather, István Szijjártó, is from Biharkeresztes, and his mother was Zsófia Pálfi. According to Hvg.hu, this was in response to a newly released agent database that includes a similarly named individual, but the details do not match Szijjártó's family.