Bride in "The Gondoliers" (5)
I believe the answer is:
tessa
'bride in the gondoliers' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tessa that I've seen before include "Girl's name, forerunner of ISA" , "Woman" , "Dahl or Jowell" , "Tax-exempt special savings account" , "Girl's name; former savings account" .)