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10 August 2018, 11:10 | Updated: 10 August 2018, 11:14
The Royal Family are worth a lot of money, but a large portion of their wealth comes from inheritance.
The Queen Mother also left a large amount of her fortune to her great-grandchildren. After her death in 2002, it was reported by the BBC that she had put two-thirds of her money into a trust fund for her great-grandsons in 1994.
It had been estimated that the princes would share about £14 million from her estate. However, Harry was said to have received a larger share than his older brother. But why?
It wasn't down to personal preference, but rather due to the line of succession and the financial impact this might have on the brothers in the future.
As second-in-line to the throne, William will "benefit financially by becoming king", BBC News said at the time.
Even before then, when his father Prince Charles becomes King, William will become the next Prince of Wales, meaning that he will take over the Duchy of Cornwall, a private estate consisting of 53,000 hectares of land that funds the public, charitable and private activities of the Prince.
It is therefore assumed that the Queen Mother was compensating for the fact that Harry will eventually receive a far less significant financial benefit than his brother.
The Queen Mother had an estimated £70 million estate, including works of art, a valuable Fabergé egg collection and jewellery.
She left her entire estate to the Queen, who gave much of her late mother's artwork to the Royal Collection, which is displayed around various royal residences.