There are 2 places named Mather Island in Canada.
All places in the world called "Mather Island".
Wellington (4)
Windsor (4)
Havelock (3)
Centreville (3)
Sidney (3)
Borden (3)
Princeton (3)
Westport (3)
Milton (3)
Richmond (3)
Benton (3)
Saint Andrews (3)
Selkirk (3)
Tracadie (3)
Kingston (3)
Victoria (3)
Beaumont (2)
Caledonia (2)
Coleman (2)
Emerald (2)
Lloydminster (2)
Nelson (2)
Riverside (2)
Saint Vincent (2)
Swift Current (2)
Weston (2)
Benton Station (2)
Delisle (2)
Frobisher (2)
Keswick (2)