The HOME-Alcar (Aligned and Annotated Cartularies) corpus was produced as part of the European research project HOME History of Medieval Europe (https://www.heritageresearch-hub.eu/project/home/), led under the coordination oflinebreakof Institut de Recherche et d'Histoire des Textes (PI: D. Stutzmann), with the Universitat Politecnica de Valencia (PI: E. Vidal), the National Archives of the Czech Republic in Prague (PI: J. Kreckova), and Teklia SAS (PI: C. Kermorvant) The HOME-Alcar (Aligned and Annotated Cartularies) corpus is a resource created to train Handwritten Text Recognition (HTR) and Named Entity Recognition (NER), and presents a collection of (i) digital images of 17 medieval manuscripts; (ii) scholarly editions thereof; (iii) coordinates linking images and text at line level; (iv) annotations of Named Entities (place and person names). The 17 medieval manuscripts in this corpus are cartularies, i.e. books copying charters and legal acts, produced between the 12th and 14th centuries.