Answer:
I am a rock group with four members. All dead one was assassinated.
Where I am there is no south, west, nor east, and weather is not fit for man or beast. What am I?
I fill a room but take no space.
Though I am dark Adam married me.
The more you take the more you leave behind. What are they?
I'm the source of all emotion but I'm caged in a white prison.