What British gardening expert wrote a supporting foreword for a publication by Marion Evans?
Marion Evans: Marion Evans (born Marion Jones, 20 June 1935 in Rhymney, Monmouthshire), is a Welsh historian and writer. Marion Evans:  She has written extensively about the town of Rhymney and its neighbouring villages and supporting forewords to her publications have been written by Ted Rowlands, Baron Rowlands; George Thomas, 1st Viscount Tonypandy; Eirene White, Baroness White of Rhymney; Roy Noble, BBC Wales; Edwina Hart, Welsh Assembly Minister and Sir Roddy Llewellyn. Roddy Llewellyn: Sir Roderic Victor "Roddy" Llewellyn, 5th Baronet (born 9 October 1947) is a British baronet and gardening expert.
Sir Roderic Victor "Roddy" Llewellyn