All happened before

Before the days of the Bank's children, Mary Poppins had other children too look after. The Dawes Children, Thomas Jr, Mary, Elizabeth, Winifred and Albert grew up twenty two years before under the rule of their dominating father. But Mary Poppins arrival may shake things up at Number 19 Cherry Tree Lane and turn a mild shy little boy into the jack-of-all-trades man we all know.