Please answer a question about the following article about Buckingham Palace:

In 1901 the accession of Edward VII saw new life breathed into the palace. The new King and his wife Queen Alexandra had always been at the forefront of London high society, and their friends, known as "the Marlborough House Set", were considered to be the most eminent and fashionable of the age. Buckingham Palace—the Ballroom, Grand Entrance, Marble Hall, Grand Staircase, vestibules and galleries redecorated in the Belle époque cream and gold colour scheme they retain today—once again became a setting for entertaining on a majestic scale but leaving some to feel King Edward's heavy redecorations were at odds with Nash's original work.

Kind Edward VII and Queen Alexandra's friends were know as what?
"the Marlborough House Set"