In 1776, during the American Revolutionary War, a band of revolutionaries led by Jonathan Eddy attempted to capture Fort Cumberland (Fort Beauséjour) as part of an effort to provoke Nova Scotia into joining the revolution against British control of the colonies. To resist this siege, known as the Battle of Fort Cumberland, Captain Dixson sailed himself and three volunteers in a small open boat across the Minas Basin (known for some of the highest tides on Earth),[5] part of the Bay of Fundy, to warn the authorities in Halifax and bring reinforcements to the loyalists' aid.[3] For this effort, Dixson was named a Person of National Historic Significance in 1938.[6]
At some point prior to 1761, Dixson travelled south to Massachusetts and met Catherine Wethered (or 'Weatherhead'),[1] whom he married in Kings Chapel in Boston on April 9 that year. That same year, Dixson received a land grant at Fort Beauséjour, but later moved to Point de Bute, New Brunswick.[1]
His half-brother Charles and his son Thomas Law also served in the Nova Scotia assembly.