The mystery behind a plaque at a U.K. hospital referring to the “1998 Quidditch World Cup” appears finally solved, delighting fans of the Harry Potter series and leaving J.K. Rowling in tears.

The plaque that appeared outside the children’s hospital in Bristol about 18 months ago says it’s “dedicated to the children” of the city and refers to “posts enchanted by Adou Sosseh.”

Avid Potter fans might recognize Sosseh as captain of Senegal's fictional Quidditch team.

But what “posts” is the plaque referring to?

Bristol resident James Carberry told the BBC the sign was put up by his friend, Cormac Seachoy, who later died of cancer. Carberry said a nearby sculpture consisting of coloured rings on metal poles reminded Seachoy of the goalposts in the fictional Potter sport Quidditch.

"He wanted the children at the hospital to think they were a gift from wizards,” Carberry told the BBC. So he had the plaque made and glued it to the building’s exterior one night in late 2014.

A user named CSeachoy did tweet about the plaque outside the Bristol children’s hospital on Nov. 30, 2014.

University Hospitals Bristol shared a photo of the sculpture and plaque Thursday, asking “Anybody want to play?”

Rowling called it a “beautiful story,” adding ironically: “I’m not crying. YOU’RE CRYING. #CormacSeachoy.”