Lord Byron had two children: one, legitimate, became Ada Lovelace, of Difference Engine fame. The other, illegitimate, was conceived with Mary Shelley's stepsister at a time when she, Mary and her husband Percy were travelling together in Europe. The child was sent to a convent and died five years later (Mary's own two children would also die on this trip, and the boys' reactions to these deaths would somewhat sour her toward the Romantic project). It is very likely Byron also conceived a second illegitimate child via his half-sister.

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It's gotten to the point where careful investigation is needed just to tell parody from reality. I think that means reality is broken.- Noclevername.