Misc: Which english writer is reported to have been stabbed to death in a pub?

Questions

Which one of the Beverley Sisters was not a twin?

In the Bible, who was responsible for the Hebrew poetry in the book Lamentations?

On a 'qwerty' keyboard, what is the extreme left-hand letter on the bottom row?

On a 'qwerty' keyboard, what is the letter in between the D and the G key?

On a 'qwerty' keyboard, what is the letter in between the B and the C key?