Neil Marco, An Historic Home, su plasdinas.co.uk, infoplasdinas@.co.uk. URL consultato l'8 giugno 2015.
«In 1899 Sir Robert Jones, who subsequently altered his name to Armstrong-Jones, had a son named Ronald. The family was, at that time, living in the London area and retained Plas Dinas as their country home. Sir Ronald Jones married Anne, and the marriage produced a son, Antony, who in 1961 married HRH Princess Margaret, the Queen's sister.»