Baronesses Nadine and Ariane de Rothschild at odds over future of Swiss chateau’s priceless contents

After three generations of genteel discretion bordering on secrecy, the international banking family the Rothschilds has been riven by rival claims to a vast collection of masterpieces that are part of the family’s multibillion-euro fortune.

The battle now playing out in the courts and media has pitched the 93-year-old senior baroness, Nadine de Rothschild – widow of Edmond de Rothschild, the late scion of the French-Swiss branch of the family – against her daughter-in-law, Ariane de Rothschild, the current baroness.

About 56,000 people control three times as much wealth as half of humanity. Here’s one way to illustrate that

Cruising around on private jets, the ultra-rich are the world’s financial elite – but how many people actually occupy this exclusive wealth club? Could they all fit into a floating mega-yacht, or is the group much bigger, possibly the size of a dazzling mega-rich city?

Thanks to an inequality report out on Wednesday, we now have a snapshot of the size of the topmost layer floating above everyone else – the 0.001%.