[1] It was created on 16 April 1859 for the Welsh politician Sir Charles Morgan, 3rd Baronet, who had earlier represented Brecon in Parliament.

His eldest son, Charles Rodney Morgan, sat as Member of Parliament for Brecon, but predeceased his father.

Charles Morgan was a politician and soldier, and notably commanded a section of the Light Brigade at the Battle of Balaclava during the Crimean War.

His horse, Sir Briggs, also survived, and lived at Tredegar House until his death at the age of 28.

To avoid a reoccurrence in the event of his own demise, Frederic passed the estates immediately to his son, John, who on his father's death in 1954 became the sixth and final Baron Tredegar, dying childless in 1962.

He sat as Member of Parliament for Brecon and Breconshire and served as Judge Advocate General from 1768 to 1806.

He was knighted in 1779 and created a baronet, of Tredegar in the County of Monmouth, in the Baronetage of Great Britain on 30 October 1792.

[5] The day after his elevation to a baronetcy he assumed by Royal licence the surname of Morgan in lieu of his patronymic.