"Seeker Aidan Kiely seized his opportunity in the fourth hour of play ..."
-- match report in the Daily Prophet (DP2)
As reported in the Daily Prophet article “Maddock Blamed for Kestrels’ Win“, Kiely won a game against the Montrose Magpies following a mis-directed kick of the Snitch by the controversial Magpies Chaser Alasdair Maddock (DP2).
Aidan is an Anglicised form of the Irish Celtic name Aodhán (Áedán, from Áed, meaning "fire") (Behind the Name).
Kiely derives from Old Gaelic O'Cadhla meaning "male descendant of" plus "graceful or beautiful" (Internet Surname Database). This player's name could also be a reference to Aine Kiely, a friend of J.K. Rowling.
While the date printed on DP2 is 8 February 1999, the timeframe for these events is 1992-1993.