The Gothic Novel

1- Who invented the G.N?
 The gothic novel was invented almost single-handedly by Horace Walpole.

 2- What was the first G.N?
The Castle of Otranto was the first G.N.

3- When was it first published?
It was first published in 1764.

4- Which basic elements of horror didn't you include on your list?
The text does mention elements likes:
Setting in a castle.
An atmosphere of mystery and suspense.
Supernatural or otherwise inexplicable events.
Women in distress.
The metonymy of gloom and horror.
5 words I want to learn:
Grating
Hinges
Howling
Clanking
Baying