[EvelynS]

Shades of Harriet Beecher Stowe (who thoroughly disapproved of such practices in the 19th century): Inbreeding has manifested itself in the French, Spanish, and German royal families through ---reduced fertility---high infant mortality---increased genetic disorders---fluctuating facial asymmetry, most noticeably in the Hapsburg lip, a feature that was so prominent in Carlos II of Spain that he couldn't chew his food.Queen Elizabeth II and Prince Philip are 2nd cousins, once removed, as well as 3rd cousins (as linear descendants of Queen Victoria and Prince Albert). Queen Victoria and Prince Albert, in turn, were first cousins. But then, during the 19th century, marrying cousins was not necessarily reserved for royalty: Albert Einstein, Charles Darwin, and Edgar Allan Poe, for example, all married first cousins. Perhaps I shouldn't even mention Lord Byron's romance with his half sister? As far as your question about anger management goes, controlling emotions probably has less to do with nature and more to do with nurture. More to the point, for many centuries, the British Royals have felt a sense of entitlement, which is sometimes not tempered by noblesse oblige.