The Story of the Franciscan friars who sailed with the Mendaña (1567) and Quirós (1605) expeditions from Callao, Port of Lima in Peru, in search of the Unknown Southland, finds a place in the vast missionary enterprise of the Spanish Friars of the sixteenth, seventeenth and eighteenth centuries: as maritime expeditions they form important links in the chain of discoveries that eventually led to the finding of Australia; as religious enterprises they are part of the world-wide missionary apostolate of the Franciscan Order of that period.