Wade is the Grandson of The Dark Wizard, Gellert Grindelwald, the Second Most Powerful Dark Wizard in history. He hides his last name so no one will see him as just the grandson of a Dark Wizard but just him, Wade.
Harry Potter by JK Rowling
Hogwar...
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(Roman is filthy rich. Picture not mine)
Wade was reading Chapter 25 of Heir to the Empire peacefully while Roman was looking at the Hogwarts material list.
Roman: seems I need to make a withdrawal from Gringotts. I wonder if I have to lend some money to Arthur.
Wade: dad, he owes you 5,000 galleons already.
Roman: he's a friend from school, his family is poor so I would like to help in any way I can.
Wade: at least we're not like those supremacist families.
Roman: true. Lucius, always trying to prove he is always right. His son would probably end up like him.
Wade: hmm.
Roman: well, get decent so we can go to Diagon Alley and get all the materials.
Wade: why didn't we get them earlier?
Roman: because you get to meet other kids your age when everyone goes to buy the materials at the same time.
Wade: dad, you know I'm a loner since the incident.
Roman: I know but you still need to make friends. It's not like you have siblings to keep you company.
Wade: sometimes I wish I did.
Roman: well doesn't matter, get decent and I'll meet you at the front of the house.
Wade: what, no Floo network this time?
Roman: we've ran out of Floo powder so I need to go buy more.
Wade: whatever you say dad.
Wade went to his room and changed to some decent clothing as he and Roman got into Roman's car and drove to London.
Wade: Diagon Alley.
Roman: yep. Your mother and I always got our books and stuff from there, Ollivander's is the right place to get a wand. We'll have to go through the Leaky Cauldron.
Wade: I have heard rumors that Harry Potter is entering Hogwarts this year.
Roman; how do you always find out about stuff?
Wade: well, seeing as how every kid gets a Hogwarts letter when they are 11 and you said that Harry Potter is about my age then I just took it from there.
Roman: with your way of thinking, you could be a detective on both the Muggle world and our world.
Wade: there is only one world. Wizards or not.
Roman: hmm.
Roman parked his car in front of the Leaky Cauldron as he and Wade got off and entered the place.