George Raymond Richard Martin, also referred to as GRRM, is an American novelist and short story writer. His works include .
Martin is best known for his , 'A Song of Ice and Fire',
which HBO later adapted for its .
Time magazine named Martin one of the most influential people in the world.
Martin has been criticized by some of his readers for .
There was a six-year gap, for example, between the fourth and fifth volumes. He had responded to these criticisms by ,
noting that working on other prose has always been .