However, during the American Revolution, following some victories in the Ohio and Illinois territories, Patrick Sinclair felt it was necessary to move Fort Michilimackinac from its exposed location on the northernmost point of the lower peninsula of Michigan to Mackinac Island.
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One of the more famous of the clan was Patrick Sinclair, who joined the Imperial Army and headed to the New World.
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The Sinclairs of Lybster have long roots running back to the Sinclair earls who ruled Caithness that was once a much larger area taking in much of Sutherland.