DAWNY,
Here's all the nine letter explorers I could find on Google. Do any of them fit?
ARCTOWSKI
ARMSTRONG
CADAMOSTO
CARSTENSZ
CAVENDISH
CHAMPLAIN
CHRISTAIN
FERNANDES
FREYCINET
FROBISHER
GONCALVES
HASSANEIN
HEYERDAHL
JENKINSON
KARLSEFNI
MACKENZIE
MALASPINA
MALOCELLO
NACHTIGAL
RODRIGUES
TAVERNIER
TSUNENAGA
VANCOUVER