He had an eight-year relationship with Princess Margaret, Countess of Snowdon, the younger sister of Queen Elizabeth II.
[2] He was educated at Shrewsbury School and then received a National Certificate in Horticulture at Merrist Wood College.
His parents were often away at equestrian events, and his nanny, Rebecca Jenkins, became his muse, encouraging the boy's gardening.
Margaret's biographer Theo Aronson made this comment some years later, "He was well-mannered, well-spoken, and amusing; above all, he was very sweet-natured.
Llewellyn issued a public statement which said, "I much regret any embarrassment caused to Her Majesty the Queen and the royal family, for whom I wish to express the greatest respect, admiration and loyalty".
[11] According to Anne Tennant, Baroness Glenconner, quoted in the 2018 documentary Elizabeth: Our Queen, the monarch discussed Llewellyn with her after Princess Margaret's funeral in 2002.
"[4] Throughout Llewellyn always regarded himself as part of that rich Welsh heritage beneath the Sugar Loaf Mountain.
[16] Llewellyn released a pop music album of standards in 1978, "Roddy", but found that the news media was interested only in his personal life.
[17] Llewellyn is portrayed by Simon Woods in the 2005 film The Queen's Sister,[18] and by Harry Treadaway in the Netflix series The Crown.