According to a children's book or textbook that has made the news:
Machado: "se fue a vivir a Francia con su familia" [he went to live with his family in France]
Actually, he died on the border trying to escape into France, accompanied by his mother, at the end of the civil war. [Here I was the one being inaccurate: he died shortly after having escaped into France with his mother.]
Lorca: "murió cerca de su pueblo durante la guerra de España" [died close to his village during the Spanish war]. Actually he died by getting shot after being arrested.
No mention that these poets were the victims of the war.