There is an incoming UK passenger list for the Montcalm which arrived from Montreal at London 10 Aug 1931. Samuel S. Worthington (36) and Clara (32) with 3 children aged 12, 10 and the above noted Shirley 1 month. All Bound for 7 Green Lane, Hazel Grove Stakford. Intended country of residence - England.
Are the older children from a previous marriage of Clara - hence looking for Yeomans or Redmond?
BMDs in Canada are protected by privacy laws. 1913 births in Ontario are the latest accessible. 1930 marriages for Ontario have just been transferred for release and 1929 records can be accessed through microfilm interlibrary loan.
You could always try Pages of the Past, a pay site fo the Toronto Star to see if a marriage or birth announcement was made in the paper.
Debbie