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The country doctor who had known Lady Sybil Crawley since she was a girl first noticed her "muddled" mental state, then her swollen ankles in Sunday night's heartbreaking episode of "Downton Abbey."

But her family ignored Dr. Richard Clarkson's warnings to have an emergency C-section, and the kindest character on the wildly popular television show died in a fit of seizures, ultimately unable to breathe.