George Martin a Song of Ice and Fire

A Song of Ice and Fire is a high fantasy media franchise centered on a series of novels by the American author George R. R. Martin and a number of television series based on the stories, settings and characters of the fictional universe. Martin began writing the first volume, A Game of Thrones, in 1991, and published it in 1996. Martin, who originally envisioned the series as a trilogy, has released five out of seven planned volumes. A Song of Ice and Fire has formed the basis of several works in different media.

Source: Wikipedia