Grave of Laura Secord, the Paul Revere of Canada
Niagara Falls, Ontario
Laura Ingersoll was born in Massachusetts to a family of Patriots, but when they moved to Canada in 1795 she switched sides and married a Canadian Loyalist named James Secord. It was during the War of 1812 that she somehow learned of Yankee plans to ambush a Canadian outpost. The traitorous Laura walked 20 miles alone "through woods and swamps and over miry roads," according to her tombstone, to reach the Canadians. Her tip-off led to the American debacle at the Battle of Beaver Dams, where the entire U.S. force was captured.
Laura lived to be 93, and over the years the story got better: she took a cow with her as cover, she walked most of the way barefoot, etc. She didn't get much recognition while she was alive, but now she's a Canadian heroine.