The renunciation of the antipope Clemente VIII Historical milestone · Sant Mateu, El Baix Maestrat, Castellón Image of Sant Mateu, not of the place itself. Gil Sánchez Muñoz, elected at Peníscola as successor to the Papa Luna, abdicated in 1429 at Sant Mateu before the legate of pope Martin V and handed over the pontifical insignia: it was the end of the Western Schism. 1429 Photo: Columbusalbus (CC BY-SA 3.0) What to see and do in Sant Mateu