Dallas clan we backed in Germany initially (5)
I believe the answer is:
ewing
'dallas clan' is the definition.
(I've seen this in another clue)
'we backed in germany initially' is the wordplay.
'backed' says the letters should be written backwards.
'initially' says to take the initial letters.
The initial letter of 'germany' is 'g'.
'we' reversed gives 'ew'.
'ew'+'in'+'g'='EWING'
(Other definitions for ewing that I've seen before include "Fictional oil baron" , "Oil family" .)