I’ve been living a lie since the series 4 finale.
YES. YES THEY FREAKING DID.
I looked it up.
To quote Kilgharrah:
"In the dragon tongue, you named him after the light of the sun.”
NICE CONTINUITY, BBC.
So either BBC’s writers change their mind somewhere between series 4 and 5, Kilgharrah can’t tell a girl dragon from a guy dragon, or our dear Katie misspoke at ComicCon. XD