Complex sentence: Though he was denounced by one Cameron woman, whose husband he betrayed to death in 1752, he never lost the confidence of the Jacobite leaders and was probably responsible for the betrayal and execution of Archibald Cameron of Locheil in 1753.
Split into simpler sentences: Though he was denounced by one Cameron woman, whose husband he betrayed to death in 1752, he never lost the confidence of the Jacobite leaders. And was probably responsible for the betrayal and execution of Archibald Cameron of Locheil in 1753.