The Margaret-Denis partnership was always the key relationship in the Thatcher family.
Denis Thatcher was the ultimate Thatcherite: an old-fashioned businessman who, in his sixties, cast aside many of his ingrained instincts to rise to the challenge of acting as consort to the UK's first woman prime minister.
Though mocked in Private Eye, he fulfilled his role in a most intelligent way, serving as the cornerstone of Margaret's life and always placing her interests before his own.
Their daughter Carol summed him up: "He was a shy man, but he had to un-shy himself pretty damn quick. It wasn't a part he ever auditioned for, but he played it brilliantly."
Carol, by contrast, may have felt a little neglected. Ex-MP Jonathan Aitken, an old boyfriend of hers, once related: "Carol and her mother had a tense relationship, with more chill than warmth. Carol admired Margaret from a distance, but did not enjoy being close to her."