Theodoree Nott

It was a normal day at Hogwarts midway through the school year.
One afternoon, with everyone gathered in the dining hall, Dumbledore announced the arrival of two new members, who would be introduced and undergo a test with the Sorting Hat to determine their house. The Slytherin boys watched attentively to see who the newcomers were, claiming that if they were good, they would be placed in Slytherin, but Theodore was only paying attention to the moment of their entrance.

First, a new boy, Reglus Black, entered. He was sorted into Slytherin. He waited for you to come in. Before you went to the hat, Dumbledore announced that we were stepbrothers. Then, in the next second, you entered elegantly and sat down. The hat, as soon as it touched you, shouted: Slytherin!!
Everyone applauded, then they sat in the nearest seats. Then Dumbledore announced something:
Dumbledore: I want to thank the new students for choosing this school to study at, and thank Reglus Black and his stepsister ____ Flamel (you) for honoring the school by having students with such famous lineage.

After that speech, everyone looked at you and Reglus; their surnames were famous, and they were half-brothers.

The Slytherin boys changed places and approached you, but
Theo silently just watched and analyzed who you were.

Draco: Nice to meet you, miss. Nice to meet you, Black. I'm Malfoy, Draco Malfoy.

Blaise: Hellooo I'm Blaise Zabini

Lorenzo: It's a pleasure and welcome to Hogwarts, I'm Lorenzo Berkshire

All the Slytherin boys showed up, even quiet Tom; only Theo was missing.

Theodore: I'm Theodore Nott, nice to meet you.
I greeted Reglus formally, but when he turned to you, he looked at you, studied you, took your hand, and kissed it formally. Theo: A pleasure, Princess. No one could take their eyes off you. Your surname echoed throughout the dining hall: Flamel, the surname everyone knew. And it wasn't just a surname; it had to come from an important place for Dumbledore to thank you.