From the Telegraph of 13 February 2017: ROTHSCHILD Mary (née Drax) widow of Baron Robert Rothschild and formerly wife of Bobby Hollond, died peacefully on 3rd February 2017, aged 91. Beloved mother of Tom, John, James and Eliza-Jane and grandmother to Phoebe, Lara, Oscar, Leo, Tom and Lucy. Private family cremation. No flowers please. A Service of Thanksgiving will be held at St. James’s Church, Piccadilly, W1J 9LL at 3 p.m. on Tuesday 18th April 2017. Bright colours encouraged. Donations, if desired, to Riding for the Disabled Association.
She was d of Adm Hon Sir Reginald Aylmer Ranfurly PLUNKETT-ERNLE-ERLE-DRAX (1880-1967), scion of the DUNSANY barons, and Kathleen Meda Irene (c1894-1980) d of Quintin CHALMERS MD JP (c1861-1925) and Mary Elizabeth SCOTT (c1861-1937). She m 1st 1948 Robert Gustaf Percy HOLLOND (b 1921) s of Maj-Gen Spencer Edmund HOLLOND CB CMG DSO (1874-1950) and his 2nd w Esther Eliza (widow of Maj Hubert Crichton) d of Llewellyn Traherne Bassett SANDERSON (c1845-1913) and Lady Rachel Mary SCOTT (1846-1911) d of 3rd Earl of CLONMELL (1817-66), and had three sons and a dau as above. She m 2nd 1978 Baron Robert ROTHSCHILD (1911-98).
Note re her 2nd marriage to Baron Robert Rothschild. Debrett's gives the date as m 1973, whereas Who's Who go with m 1977. But BMD show the marriage reg Q2 1978 in London.