Baron Newcomen is in Baron Ireland.
On 29th July 1800 Charlotte Gleadowe-Newcomen 1st Viscountess Newcomen was created 1st Baroness Newcomen with the remainder to his male heirs of her husband. The title is said to have been created in honour of her husband, in such a way that would enable him to sit in the House of Commons.
On 16th May 1817 Charlotte Gleadowe-Newcomen 1st Viscountess Newcomen died. Thomas Gleadowe-Newcomen 2nd Viscount Newcomen [aged 40] succeeded 2nd Viscount Newcomen, 2nd Baron Newcomen.