sir lancelot

[jaffa cake]

19a misrepresent - - m- e

[slaney]

Belie?

[sarumite]

..... or Fudge?

[BigMac]

Belie = Creed abandoned by fellow = BELIEF with the F missing

B = from BEDEVIL (Active socieiety girl returns = LIVE DEB)
L = from LITOTES (untruths = LIES around small child = TOT)
E = from APPREHENSION (anagram of "earphones nip")

[sarumite]

Thanks BigMac .. I was at a disadvantage, not being in possession of clues/grid.