Complex sentence: He was a Radical in politics, and expected no appointment from Government, until he was made an advocate depute in 1861, under Palmerston; he prosecuted Jessie McLauchlan in the 1863 Sandyford murder case.
Split into simpler sentences: He was a Radical in politics, and expected no appointment from Government, until he was made an advocate depute in 1861, under Palmerston. He prosecuted cases for the Crown including Jessie McLauchlan in the 1863 Sandyford murder case.