The motto, Che Sera Sera, you should all know from the song (What Will Be, Will Be) and the animal is an antelope. This symbol is a much reduced version of some of the heraldry associated with the Bedford Estates.
Looking for a map showing the extent of the Bedford Estates, is the best we've found.
More information about the : "The Bedford Estates has owned, developed and managed much of Bloomsbury since 1669."
This section lists the memorials created by the subject on this page:
Bedford Estates
We believe that the crown and the 'B' are indicative of the Bedford Estates a...
See F. A. Kerven. 'The Metamorphosis of Battersea, 1800 - 1914 a Building History', an Open University thesis by Keith Alan Bailey  refers to a number of Kervens who were builders including C.J....
The photograph appears under Stoke Newington Manor House on the Hackney Plaques and Local History website. There is no further explanation. Maybe it shows excavations at the site.
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