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Where did Harry's parents get all of their money from?
Harry Potter is able to pay for his Hogwarts education and all of his other expenses thanks to a large amount of wizard gold in an account in his name at Gringotts. Where did this money come from? Is it ever explained? As far as I remember, he inherited the cash from his parents. But (I think) James was poor, and Lily was Muggle-born - so where would she have gotten a large amount of wizard money?