Howard, a Vermonter whose father was a home builder, says the NAHB, in all, speaks for a constituency of 8 million to 10 million people.

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Buffett has said in the past that Howard would assume that role when his father was no longer running Berkshire.

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Mr Howard, a business consultant, had claimed his father, 76, whose original surname was Lawson, had "forfeited" his right to inherit the castle in 1962 by neglecting to comply with some terms in his great grandfather's will.

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However, while the boy was deemed a risk by doctors, district judge Howard Riddle was told by the boy's father he had "never been physically aggressive" and was "quiet at school", according to consultant child psychologist Dr John Brian.

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