The tournament was held on Saturday, May 14, A.S. XL by the Shire of King's Crossing with assistance from the Incipient Shire of Gryphons' Keep and the Barony-Marche of the Debatable Lands. The other semi-finalists were THL Duncan von Halstern and Lord Thomas von Hessen.
Links to information about the tournament, including the full list, photos and video of the combat and investing of the prince and princess, are the web page linked from "original article" below, courtesy of the Kingdom Webminister, Lord Alexandair O'Conchobhair and Maitresse Yvianne.

It's "Viscount Master Robin Wallace"
So noted. Thanks for the correction!