Although there are some risks associated with consanguineous marriages, the overall risk is still relatively low.

But the trio also all married their first cousins - as did many other famous figures, including Iraqi dictator Sadam Hussein, poet Edgar Allan Poe and American outlaw Jesse James. The controversy ...

In the UK, there is no legal ban on two cousins having a relationship or getting married. It's actually quite common, with 10 per cent of marriages around the world being between first or second ...