Hi Seth! My main two connections for you would be either Margaret Goyle (the year above him with Percy at school, she was a Gryffindor) or William Abbott who was a few years below him in school and a Hufflepuff. Maggie was best friends with Percy in school and is recently widowed. Might just be a former connection. Will was an avid quidditch fan and played for/captained his house team. He can be found at every society event in his hunt for a wife.