1. Seal CXXXVII.20 Reference (shelfmark): Seal CXXXVII.20 Title: Scope & Content: William de Cusancia, Dean, and the Chapter of St. Martin's Le Grand, 1350. William de Cusancia, Dean of St Martin's, London: Seal: 1349, 1350. Collection Area: Western Manuscripts Languages: English Date Range: 1349-1350 Extent: 1 item