He published, in 1947 , Dame Margaret - the life story of my mother , a warm-hearted tribute to the memory of his mother, and in 1960 , Lloyd George .

During his term as Sec. of State for Home Affairs and Minister for Welsh Affairs he publicly announced on behalf of the Government that Cardiff was to be capital of Wales ; he was made freeman of the city ; the degree of LL.D. honoris causa of the University of Wales was conferred upon him. He was the first chairman of the Pantyfedwen Trust . He d. 14 Feb. 1967 and was buried in Cricieth public cemetery.

On 1 July 1955 a conference of all parties and organisations was called under the auspices of the New Wales Union ( Undeb Cymru Fydd ) at Llandrindod to consider organizing a national petition for the campaign for a Parliament for Wales ; T. I. Ellis (see above) , s. of T. E. Ellis ( DWB , 214) and Ifan ab Owen Edwards (see above) were on the platform to support the campaign, and in proposing a resolution for the establishment of a committee to promote the petition and the campaign, M. Ll.G. referred to this and said that the three of them were three branches of ‘ old oaktrees which had their roots deep in the soil of Wales ’. She was appointed to be president of the committee which was established to arrange the petition ; she addressed many meetings throughout Wales . Her name and the fact that she had inherited much of her father's gift of oratory ensured large audiences for these meetings, and through her leadership she was responsible for removing much prejudice against the idea of a parliament for Wales . She was a member of the deputation which presented the petition with a quarter of a million signatures to the government in Apr. 1956 . She was an active and conscientious M.P. on behalf of her constituents; but it is ironic that it was during the time that she was not an M.P. that she made her most substantial contribution to the politics of her time in Wales .

She was a member of Cricieth town council for many years, following her mother's example in this, and was chairman for a year; a J.P. like her mother before her, she also inherited much of her mother's love of the garden at Bryn Awelon , Cricieth , which she inherited after her mother's death. She was awarded the degree of LL.D. honoris causa by the University of Wales . She was unmarried but after her father received the earldom on 1 Jan. 1945 , she became known as Lady Megan Lloyd-George ; she was also made a C.H. shortly before her death. She was also a member of the Gorsedd of Bards ; and for a time she was an active president of the Society for the Preservation of Rural Wales .