Lady Audrey Jane Charlotte Howard was the daughter of the 4th Marquess Townsend. She married, firstly, in 1873, the Hon. Greville Theophilus Howard, second son of the 17th Earl of Suffolk, and secondly, in 1882, General the Rt. Hon. Sir Redvers Henry Buller. Their daughter Audrey Charlotte Georgina was born in 1883.
Lady Howard may have known JW in the mid-seventies, when her name appears in an address book (#12714).
Debrett's Peerage, Baronetage and Knightage, London, 1907.