Host Conan ____ (6)
I believe the answer is:
obrien
(Other definitions for obrien that I've seen before include "Flann -, Irish novelist" , "'Kate ..., Edna ..., (1'5)'" , "Kate . . . . . ., Flann . . . . . . (1'5)" , "I be Ron, strangely, with this surname" , "Conor Cruise and Kate" .)