From the Telegraph and Times of 14 December 2016: SALISBURY Marjorie Olein, Dowager Marchioness of Salisbury, peacefully at home. Beloved mother, grandmother and great-grandmother. Born 15th July 1922: died 12th December 2016. The funeral will take place at midday on Saturday, 17th December at Hatfield Parish Church. There will be no memorial service. Flowers welcome, to be delivered to Hatfield House.
She was d of Capt Hon Valentine Maurice WYNDHAM-QUIN (1890-1983), scion of the DUNRAVEN and MAYO earls, and Marjorie Elizabeth PRETYMAN (1897-1969), scion of the BRADFORD & SCARBROUGH earls, etc etc. She me 1945 the 6th Marquess of SALISBURY and had six sons and a dau.
The Telegraph have been quick to produce her obit: http://www.telegraph.co.uk/
obituaries/2016/12/13/dowager- marchioness-salisbury-garden- designer-obituary/