Winifred was born in 1882 at 8 Merton Street, Oxford,[1] the youngest child of Rev.
Edmund Arbuthnott Knox and Ellen Penelope French, daughter of the missionary Rev.
[2] Her father was a fellow at Merton College, Oxford at the time of her birth and later was the fourth Bishop of Manchester (1903–1921).
[4] Knox was one of the first 40 pupils to attend Wycombe Abbey School, and she went on to read Modern History at Lady Margaret Hall, Oxford.
[8] When her husband was awarded a knighthood in 1938 she assumed the title of Lady Peck.