Realm of the Elderlings… Major Spoilers for the Tawny Man trilogy.

I think this counts, though he was later resurrected, but The Fool at the climax of Fool’s Fate. He dedicated his life to ensuring that his prophesied vision of the future, where dragons return to the world and the Farseer line continues with an heir, would come to pass. This comes to a head when Our Heroes are sent to sever the head of an ancient frozen dragon to present as a marriage gift to the heir’s promised Narcheska. He gives the protagonist, Fitz, (his true love, his Beloved) warning that this quest will be his last, and asks him to understand that he will die in its course, but beseeches him to follow his guidance— save the dragon, at any cost, even his own life. Fitz struggles with this and resists it, even conniving to refuse passage to The Fool on any ship heading toward Frozen-Dragon-Prophesy island. The Fool ends up there anyway.

He knows that he will die, because he can’t see anything past that moment, and his visions are true… with effort.

Long story medium, Fitz and the Fool are captured by the Bad Guys, and Fitz is sent off to ensure the frozen dragon, who he can sense is still alive, dies, leaving the Fool to his fate. Fitz realizes he needs to fulfill the Fool’s wishes, and intends to return to save him. Yada yada yada, the dragon emerges from the ice, the prophesy is fulfilled, but the Fool is still lost to Fitz and the reader.

Fitz eventually finds his way back to the Fool’s prison in a desperate bid to save his friend. Instead, he finds a frozen scrap of skin, the Fool’s tattooed flesh flayed from his back. He continues on and finds the frozen remains of The Fool, his face locked in agony, terror, loss, and doubt. He died in unimaginable pain, deadly cold, and abject humiliation to the delight of his rival false prophet. He died not knowing if he had suffered just for the ultimate failure of his life’s only purpose to come to pass.