Goldman Sachs has been unusual in having several times flourished under a top management double-act notably John Whitehead and John Weinberg, and later Stephen Friedman and Robert Rubin, who now heads the Treasury.

ECONOMIST: Goldman Sachs

The trail and guide for Glynllifon near Caernarfon has been produced by arboculturist John Whitehead, who trained at Kew Gardens in London.

BBC: John Whitehead at the trail

Mr. Romney was introduced by John Whitehead, a former Goldman chief who served as a deputy secretary of state in the Reagan administration.

WSJ: Goldman Turns Tables on Obama Campaign