Complex sentence: The "Gesta Hungarorum" is the earliest extant Hungarian chronicle which was written by an unidentified author, now known as Anonymus, in the second half of the 12th century or early 13th century.
Split into simpler sentences: The "Gesta Hungarorum" is the earliest extant Hungarian chronicle. It was written by an unidentified author, now known as Anonymus, in the second half of the 12th century or early 13th century.