He returned to government again as Lord President in March 1812 , and , in June of the same year , became Home Secretary . As Home Secretary , Sidmouth countered revolutionary opposition , being responsible for the temporary suspension of '' habeas corpus '' in 1817 and the passage of the Six Acts in 1819 . His tenure also saw the Peterloo Massacre of 1819 . He left office in 1822 , succeeded as Home Secretary by Sir Robert Peel , but Sidmouth remained in the Cabinet as Minister without Portfolio for the next two years , opposing , along with the Duke of Wellington , other members of Cabinet , and King George IV , British recognition of the South American republics . He remained active in the House of Lords for the next few years , making his final speech in opposition to Catholic Emancipation in 1829 and casting his final vote against the Reform Act 1832
Peterloo Massacre
Peterloo Massacre
Henry Addington, 1st Viscount Sidmouth