Been reading lately the Ea Cycle by David Zindell, and from the first the protagonist has reminded me strongly of this song.
Seventh son of a king, from the ancient lineage whose duty it has been to guard the setting’s lost holy grail. His flattering description of his princely brother, who looks just like him. Gifted in the mental and martial arts, who suffers from his power of empathy. Who has a lightning-bolt scar on his forehead that marks him out to mystic forest folk when those are encountered.
Am reading the second/third volume in the series now, Lord of Lies, and never have I seen a protagonist more eager to proclaim himself the setting’s Chosen One, even though he’s clearly not.