It happens that people move to new countries during their lifetime and so of course curlers as well. Some are so good that they have been able to represent both their native country and their new country.
But... there are only two curlers that have been able to win championships for two countries.
Lars Vågberg was the first to do this unique feat. He won the European Curling Championship in 1990 for his native Sweden and added the Olympic gold in 2002 for Norway.
The second to achieve this was Carolyn Morris, originally from Scotland for whom she won the World seniors in 2005. She repeated this in 2013 but this time representing Canada