Muriel Emily Ashley, Lady Mount Temple (née Spencer, formerly Forbes-Sempill; 1881 – 24 June 1954), also known as Molly Mountemple, was a British aristocrat.

A bathroom in their second town house, done in the Art Deco style, was called "Lady Mount Temple's Crystal Palace" by the British press.

Walter Spencer of Fownhope Court, Herefordshire and Anne Elizabeth Hudson of Bache Hall.

[4] On 29 August 1914 she married a second time, to Lieutenant-Colonel Wilfrid Ashley, who was a grandson of Anthony Ashley-Cooper, 7th Earl of Shaftesbury.

[12] Their first house, built at 12 Gayfere Street (1923–26),[13] had a drawing room completely decorated with gold leaf.

The bathroom in their second town house was called "Lady Mount Temple's Crystal Palace" by the press.