This paper presents the first in-depth analysis of the textiles held by the Museo de la Real Colegiata de San Isidoro de León, providing a careful investigation of textile features and raw materials, in addition to carbon-14 dating and archival research. These new data have allowed us to redate the fabrics, placing them within their tenththrough early thirteenth-century Mediterranean and European contexts. The result is a more complex image than was previously assumed, and it offers a significant starting point for further research into the roles played by textiles in medieval Iberia.