Related Parks Canada Sites Loyalists Arrive in New Brunswick On May 10, 1783, the Spring Fleet carrying more than 2000 Loyalist refugees appeared at the mouth of the Saint John River. Laura Secord On June 22, 1813, during the War of 1812, loyalist Laura Secord secretly journeyed 30 km to warn British troops of a planned American attack. Loyalist House National Historic Site Loyalist House National Historic Site is a fine example of the Federal style of architecture as developed in New England..