Maester Luwin from "A Song of Ice and Fire".
Allegiance: House Stark
Died: In +/- 299AL, at Winterfell
The portrait is made by Roman Papsuev also known as "Amok".
He generously allowed me to upload his awesome portraits here and represent him on deviantART (the statement of permission is attached).
You can find more portraits of him in my gallery --> [link]
Maester Luwin & "A Song of Ice and Fire" © George R. R. Martin
The portrait © Roman Papsuev alias "Amok" [link]