From the Telegraph of 9 June 2012:
CHATTO Rosalind Joan, died in Chelsea on June 5th 2012. Beloved mother, mother-in-law and grandmother. Renowned theatrical agent. Loyal and much loved friend.
Her son, Daniel (b 1957) m 1994 Lady Sarah Frances Elizabeth ARMSTRONG-JONES (b 1964), d of The Princess Margaret Countess of Snowdon and the Earl of Snowdon, and had two sons: Samuel (b 1996) and Arthur (b 1999) – currently 18th & 19th in line to the British throne.