As an expert in comic book lore and the Marvel Universe, I can provide you with an accurate answer to your question about the relationship between Quicksilver and Magneto.

In the original Marvel Comics continuity, Quicksilver and his twin sister Scarlet Witch were initially introduced as mutants with no known connection to Magneto. However, later retcons and storylines, particularly in the 1980s, established that they were indeed the children of Magneto, making him their father.

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Quicksilver (Pietro Maximoff) is a fictional superhero appearing in American comic books published by Marvel Comics. ... In later stories, he became a superhero himself. He is the twin brother of the Scarlet Witch and, in most depictions, the son of Magneto and the half-brother of Polaris.read more >>