Shannon Ryskamp is a 6th year Ravenclaw whose on the Quidditch team as Keeper. She has twin brothers, Ryan and Tony, who graduated a year before him (If I'm doing the math right) and were on the Quidditch team. Ryan was a Gryffindor Beater and Tony was the Hufflepuff seeker. So she probably knows him through her brother, and maybe his wife, as she was a Ravenclaw.
Also, I play little fourthie Aiden Lynch. He's a Gryffindor and he's the Seeker on the team, so he's too young to know Patrick.