Mary Smith earned sixpence a week shooting dried peas at sleeping workers windows. A Knocker-up (sometimes known as a knocker-upper) was a profession in England and Ireland that started during and lasted well into the Industrial Revolution and at least as late as the 1920s, before alarm clocks were affordable or reliable. A knocker-up’s job was to rouse sleeping people so they could get to work on time.
Mill wall, East London ~ The association with Cockney and the East End in the public imagination may be due to many people assuming that Bow Bells are to be found in the district of Bow, rather than the lesser known St Mary-le-Bow church. Thus while all East Enders are Cockneys, not all Cockneys are East Enders.