These were all details from a coloured print based on this painting -
Edward Matthew Ward 'The South Sea Bubble, a Scene in ‘Change Alley' in 1720' -
The South Sea Bubble was 'a period of wild financial speculation, when virtually any scheme, which gullible investors thought could make money, was eagerly seized upon. It was followed by a collapse... In choosing this subject, Ward clearly had in mind the 'Railway Mania' of 1844-5, which, like the South Sea Bubble, collapsed with many fortunes lost.'
This is a self portrait by the artist, in which he is painting a portrait of his daughter.
Both the portrait and the 'The South Sea Bubble' paintings show innocence as viewed from experience. The naivety cannot last and so I think he wanted to keep it in his paintings.