[9] His second son, Godfrey Morgan fought in the Charge of the Light Brigade in the Crimean War[10][11] and was made 1st Viscount Tredegar in 1905.

[4] Dorothy was the daughter of Ralph Bassett (1850-1903), a justice of the peace, Deputy Lieutenant, and High Sheriff of Glamorgan, claiming descent the early Norman Bassets.

[19] Those in attendance included Lord and Lady Aberdare, the Viscountess Hereford (Morgan's aunt), and the Earl and Countess of Dunraven.

[23][24] In November 1919, Dorothy began an affair with Ralph Kirby, a Second Lieutenant in the King’s Shropshire Light Infantry, while he was stationed in Pembrokeshire.

[26][c] Having lost additional income from his wife's mineral-rich landholdings in South Wales, Morgan left Boughrood Castle in 1921, and with the exception of a brief stint in Scotland, spent the remainder of his life in various Mayfair flats.

[4][28][29] In 1937, a compulsory purchase order was applied to houses 208-238 Pantbach road, Rhiwbina, which Morgan co-owned with the Earl of Carrick and the Hon.

[32] Having been in ill-health for sometime, Frederic Morgan succumbed to osteoarthritis, and died on 21 August 1954 at his London home, 42 Upper Brook Street.

Following his death, an article in the Western Mail stated that Morgan "will be remembered as a keen sportsman, who always had tenants interests at heart.

[37] The Edinburgh Evening News reported that Morgan left gross estates of £6488,[e] having transferred his entire inheritance to his son.

An extract reads, "a winning day would lead to an evening decorated with smiles; failure would mean a bout of gloom at dinner".

Morgan followed a strict schedule, leaving his flat at 10am for Boodle's Club, staying for lunch, before starting for the local graveyard gardens, where he would sit "pending the receipt of news as to the success or failure of his wagers".