Brett was survived by three daughters: • Dayang Leonora Margaret, Countess of Inchcape, wife of
Kenneth Mackay, 2nd Earl of Inchcape (by whom she had a son,
Lord Tanlaw, and a daughter), and later wife of Colonel Francis Parker Tompkins (by whom she had a son). • Dayang Elizabeth, a
RADA educated singer and actress, wife of firstly
Harry Roy (with whom she had a son, David Roy and daughter, Roberta Simpson), secondly, Richard Vidmer until her death. • Dayang Nancy Valerie, an actress, known for
The Charge of the Light Brigade (1936 film), wife of firstly, Robert Gregory, an American wrestler; secondly, José Pepi Cabarro – a Spanish businessman; thirdly, Andrew Aitken Macnair (one son, Stewart, born 1952); and fourthly, Memery Whyatt. She died in Florida. ==Sister==