Preparations for Future Plans

Drewyn had big Plans for the Future, so he Quadrupled what was already in the Gringots and the Lestrange Family Vaults, and used it to buy Three separate Castles in two Separate Countries: Germany and Australia, two from Germany and one from Aussie. The First one in Germany was by far the Largest and would do Nicely, the one in Australia was Open and was perfect for what he had in mind for it, and the Second one in Germany was Just slightly smaller than the First one, but it was not to far from the First one, apparently the Original owners hated each other so much they Tried to undermine each other in every conceivable Way imaginable, but their Children fell in love and once their respective father's had proven a bigger embarrassment to their families than what was tolerable, and they were removed from power, they wed and now they wanted to be rid of the Two castles. So Drewyn bought it all and Used a Magical Spell to Give it some Ghosts and Keep it Frozen in time until after the Deathly Hallows.

He wouldn't let anyone find out he bought these until it was safe, so he erased all record of his Purchase from Lestrange Family records and the Real Estate Dick that handled the purchase of it for him.

He wanted these to provide a safe haven in the Post-War State, well that and a few other things.