1. Cotton MS Claudius A XIV Reference (shelfmark): Cotton MS Claudius A XIV Title: Jakob Nielsen (James Nicholas of Dacia), Liber de distinctione metrorum, written in commemoration of Aymer de Valence, 11th earl of Pembroke (d. 1324) Collection Area: Western Manuscripts Languages: Latin Date Range: 1st half of the 15th century Extent: 1 item