 He entered the House of Commons in 1769 as Member of Parliament for Brecon, succeeding his brother Sir Charles Morgan.In 1771, he accepted the Stewardship of the Manor of East Hendred in order to enter the by-election at Monmouthshire, replacing his late brother Sir Thomas Morgan.Unusually, given the immense Morgan influence in Brecknockshire and Monmouthshire, the election was contested, albeit unsuccessfully, by Valentine Morris.