It was back in 1690, the year after the Toronto Maple Leafs won their last Stanley Cup, when King Billy beat the Catholic King James to ensure the Protestant ascendancy in Ireland.
Some are still fighting that battle today.
Happily, at least according to what I read in The Belfast Telegraph this very minute, the 12th has finally morphed into a true public holiday. "Andrew Irvine, Belfast city centre manager, said: 'In terms of visitors, the Twelfth of July is the largest annual event we have. Belfast city centre has something to offer everyone this Twelfth.'” 250,000 visitors.