2002 film starring Pierce Brosnan and Sophie Vavasseur, loosely based on the story of Desmond Doyle's fight against the Irish courts (6)
I believe the answer is:
evelyn
(Other definitions for evelyn that I've seen before include "Auberon Waugh's father" , "Authors John ---, --- Waugh" , "Boy or girl" , "'Brideshead Revisited' was written by . . . . . . Waugh '" , "'Vile Bodies' novelist" .)