Southfork matriarch (5)
I believe the answer is:
ellie
'southfork matriarch' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ellie that I've seen before include "Diminutive girl" , "a wake-up call" , "Name of girl in The Water Babies (Kingsley)" , "woman" , "Little Eleanor" .)