Christie-an name? (6)
I believe the answer is:
agatha
I believe this clue is a double definition.
'christie' is the first definition.
(I've seen this in another clue)
'an name?' is the second definition.
(Other definitions for agatha that I've seen before include "Wodehouse aunt" , "...... Christie, author" , "...... Christie wrote great detective stories" , "Detective story writer" , "Dame - Christie, English crime writer" .)