In 1578, Queen Elizabeth I granted a charter to Sir Humphrey Gilbert to explore and colonise territories unclaimed by Christian kingdoms. The terms of the charter were vague, though Gilbert understood it to give him rights to all territory in the New World north of Spanish Florida. Following Gilbert's death in 1583, the queen divided the charter between his brother Adrian Gilbert and his half-brother Walter Raleigh. Adrian's charter gave him the patent on Newfoundland and all points north, where geographers expected to eventually find a long-sought Northwest Passage to Asia. Raleigh was awarded the lands to the south, though much of it was already claimed by Spain. However, Richard Hakluyt had by this time taken notice of Verazzano's "isthmus", located within Raleigh's claim, and was campaigning for England to capitalise on the opportunity.