I've learnt of two Tim Horton outlets in Belfast ... one at the Spar convenience store in Great Victoria Street near the Crown Bar. It has a Tim Horton's coffee and donuts kiosk, a Kitsu Noodle Bar and a Treehouse Juice and Smoothie bar. The other Tim Horton is at the Malone Road Spar. There are plans to make the concept available to other Spar stores across Northern Ireland in the next few years.
Thanks to a poster on Dr Jane Lyons Y-IRL genealogy site I learnt that Tim Horton was a hockey player who played for Buffalo New York. He played in the NHL for many years and was a member of the Toronto Maple Leaf team when they won their last Stanley Cup in 1967. He died in a car accident between Toronto Ontario and Buffalo New York in 1974. He and a partner opened the Tim Horton Donut shop chain in Canada and it has since expanded into the USA; Kandahar, Afghanistan and Ireland.