Complex sentence: He supported the Hanoverians during the Jacobite Rising of 1745, and later gave evidence against the Lord Provost of Edinburgh, Archibald Stewart, who had surrendered the city to the Jacobites.
Split into simpler sentences: He supported the Hanoverians during the Jacobite Rising of 1745. He later gave evidence in court against the Archibald Stewart, Lord Provost of Edinburgh, who had surrendered the city to the Jacobites.