Seal of John of Villehardouin, father of Geoffrey I. Inscription: +S[IGI]LL[UM] IOHANIS DE VILLA[RDUI]N
Original design: unknown 13th-century artist; Sketch: Gustave Schlumberger (1844–1929)
12<sup>th</sup> century <div style="display: none;">date QS:P,+1150-00-00T00:00:00Z/7</div>
Gustave Schlumberger. "Sceaux des feudataires et du clergé de l'empire latin de Constantinople". In: Bulletin Monumental, tome 62, 1897. pp. 421-458