Summerby is a wizard who was Sorted into Hufflepuff House in Hogwarts School of Witchcraft and Wizardry. He played in the Hufflepuff Quidditch Team in the role of Seeker in 1995/1996. In their second match of the season he unfortunately had a cold. He played opposite the Gryffindor substitute Seeker, Ginny Weasley, who managed to catch the Snitch ahead of him. She said afterwards that this was because the Snitch wasn't fast and Summerby sneezed and closed his eyes at the wrong moment. Despite this Hufflepuff won the match by ten points. Hufflepuff also won their third match which was against Slytherin, but by a narrow margin again and Gryffindor went on to win the Quidditch Cup.