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The Liber Secretorum Fidelium Crucis (literally 'Book of the Secrets of the Faithful of the Cross') is a Latin work by Marino Sanuto the Elder. It is one of the "recovery of the Holy Land" treatises intended to inspire a revival of the Crusades. It has also been named as Historia Hierosolymitana and Liber de expeditione Terrae Sanctae, and Opus Terrae Sanctae, the last being perhaps the proper title of the whole treatise as completed in three parts or "books".[1]
It was begun in March 1306, and finished (in its earliest form) in January 1307, when it was offered to Pope Clement V as a manual for true Crusaders who desired the reconquest of the Holy Land. To this original Liber Secretorum Sanuto added largely; two other "books" were composed between December 1312 and September 1321, when the entire work was presented by the author to Pope John XXII, together with a map of the world, a map of Palestine, a chart of the Mediterranean, Black Sea and west European coasts, and plans of Jerusalem, Antioch and Acre. A copy was also offered to the king of France, to whom Sanuto desired to commit the military and political leadership of the new crusade.[1]
This work has much to say of trade and trade-routes as well as of political and other history; and through its accompanying maps and plans it occupies an important place in the development of cartography.
- ^ a b Leopold, Antony (1 January 2000). How to Recover the Holy Land: The Crusade Proposals of the Late Thirteenth and Early Fourteenth Centuries. Ashgate. ISBN 978-0-7546-0120-3.