For the same reason he's Eddard Stark and not Edward, they're Maesters not Masters, Samwell isn't Samuel, Petyr Baelish isn't Peter and so on and so on. read more
For the same reason he's Eddard Stark and not Edward, they're Maesters not Masters, Samwell isn't Samuel, Petyr Baelish isn't Peter and so on and so on. read more
And in the real world, 'sir' is the title given to knights. So that doesn't really explain why Martin chooses a novel (yet homophonous) spelling! I suspect the reason is just 'to look different', given the preconceptions people have about knights in fantasy. read more