Medii ævi kalendarium, or Dates, charters and customs of the middle ages; with kalendars from the tenth to the fifteenth century; and an alphabetical digest of the days of saints and anniversaries of the church; forming a glossary of the dates of the middles ages; with tables and other aids for ascertaining the date of early documents and the occurrence of historical events
Hampson, R. T. (Robert Thomas), 1793-1858