Jonathan Wylie is the pseudonym of Mark and Julia Smith, a married couple who live and work in Norfolk. Having met while they were both working for a major London publishing house, they sparked each other into creative life, and began writing as a team a few months after setting up home together. They have been writing full time since 1991. The pen-name they have used most recently is Julia Gray, author of Ice Mage, Fire Music, Isle of the Dead and the popular 'Guardian' Cycle.