Complex sentence: The earliest source that mentions the name of Köröskényi estate in relation with its owners is The Grant of Queen Elizabeth the Cuman from 1272, the queen's donation of "Kuruskeny" estate in Nitra county to the count Dominic de Vejeha.
Split into simpler sentences: The earliest source that mentions the name of Köröskényi estate in relation with its owners is The Grant of Queen Elizabeth the Cuman from 1272. It is the queen's donation of "Kuruskeny" estate in Nitra county to the count Dominic de Vejeha.