My brother 'knocked' me to the floor during argument over my wife: Prince Harry claims in autobiography

Spare is a remarkable volume, in which the altercation between the two princes forms a startling passage.

Prince Harry has made a shocking revelation in his upcoming autobiography that his brother Prince William "knocked" him to the floor during an argument over his American wife Meghan Markle, according to a media report.

Describing a confrontation at his London home in 2019, Harry says William called Meghan "difficult", "rude" and "abrasive", which Harry calls a "parrot (ing of) the press narrative” about his American wife, according to the Guardian, which says it has seen a copy of the duke's memoir 'Spare' .

The confrontation escalated, Harry writes, until William “grabbed me by the collar, ripping my necklace, and … knocked me to the floor," the paper says.

The extraordinary scene, which Harry says resulted in visible injury to his back, is one of many in the book, which will be published worldwide next week. The book is likely to spark a serious furore for the British royal family.

The Kensington Palace said it "has no comment to make".

The book's title comes from an old saying in royal and aristocratic circles: that a first son is an heir to titles, power and fortune, and a second is, therefore, a spare, should anything happen to the first-born, the report added.

Spare is a remarkable volume, in which the altercation between the two princes forms a startling passage.