A few years later, another Maya codex was found possessed by another collector, which became known as the "Codex Cortesianus" (in the belief that it had been in the possession of Hernán Cortés). When Léon de Rosny examined it later, he determined that it was actually a part of the Troano codex, the two parts having been separated at some indeterminate time in the past. The two parts were later rejoined and are known collectively as the Codex "Madrid" or "Tro-Cortesianus"; they remain displayed in Madrid.