Century on test debut by wicketkeeper

Matt Prior was the first England wicketkeeper to score a century on Test debut. When I first heard that stat I thought it was wrong, as I knew that keepers Paul Gibb and Billy Griffith had both scored debut hundreds, but on closer inspection it turned out that neither of them was keeping wicket in the match in question - Gibb against South Africa at Johannesburg in 1938-39 (he actually scored 93 and 106), and Griffith against West Indies at Port-of-Spain in 1947-48. Only two wicketkeepers had previously scored a century on Test debut, and both of them were from Sri Lanka: Brendon Kuruppu, who made 201 not out against New Zealand in Colombo in 1986-87, and Romesh Kaluwitharana, who biffed 132 not out against Australia, also in Colombo, in 1992-93.
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