 In 1768, Lowry was elected to the Irish House of Commons for Tyrone and sat for the constituency until 1781, when he was elevated to the Peerage of Ireland as Baron Belmore, of Castle Coole in the County of Fermanagh.On 6 December 1789 he was further created Viscount Belmore and on 20 November 1797 was created Earl Belmore, in the County of Fermanagh.Lord Belmore was High Sheriff of County Tyrone in 1769 and of County Fermanagh in 1779.