Complex sentence: Archibald Cameron of Lochiel (1707--1753) was a doctor and prominent leader in the Jacobite uprising of 1745 and, on 7 June 1753, the last Jacobite to be executed for high treason.
Split into simpler sentences: Archibald Cameron of Lochiel (1707--1753) was a doctor and prominent leader in the Jacobite uprising of 1745. On 7 June 1753, he was the last Jacobite to be executed for high treason.