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