(Henrietta) Blanche Stanley (30 July 1830 – 5 January 1921), married David Ogilvy, 10th Earl of Airlie, and was the grandmother of Clementine Churchill.

Asquith's epistolary obsession with Venetia (by early 1915, he was writing her up to three letters a day) was not just an emotional dependence.

Although Venetia was intelligent, well-read, and keenly interested in politics, she apparently felt overwhelmed by Asquith's demands.

In January 1915 Venetia commenced three months nurse training as a paying probationer at The London Hospital, Whitechapel under matron Eva Luckes.

In 1923, she bore a daughter, Judith, who was said to be the child of William Humble Eric Ward, then Viscount Ednam and later 3rd Earl of Dudley.

Judith grew up to befriend Princess Margaret during the Second World War and marry the American photographer Milton Gendel, with whom she created an artistic salon in Italy.

The same year, the Liberal Party invited her to stand as a parliamentary candidate for South Norfolk, where she had inherited Montagu's country house in Attleborough, but she declined the offer.

Venetia's daughter Judy Montagu surprised Sir Martin Gilbert, the official biographer of Winston Churchill, by turning up with a laundry basket full of the letters.