Background
Llewellyn was the youngest son of the Welsh industrialist Sir David Llewellyn, 1st Baronet.
Llewellyn was the youngest son of the Welsh industrialist Sir David Llewellyn, 1st Baronet.
39th United Kingdom Parliament. 40th United Kingdom Parliament. 41st United Kingdom Parliament]
He sat as Member of Parliament for Cardiff North from 1950 to 1959 and served under Winston Churchill as Under-Secretary of State for the Home Department from 1951 to 1952.