No insult taken at all. The Lady looks frail, although probably wasn't, and her outfit looks heavier than she does. I would love to know how she is related and it is amongst the Grimwood collection I am told.
Joseph Grimwood (4th May 1831 to 11th October 1892) after a career in the army (China, Crimea) joined the Suffolk Police and ultimately became an Inspector. He is my 2nd great grandfather.
Noting the photograher is in London, Hoxton I think, why would the Lady have a picture taken by Margetts in Kingsland Road if like many Grimwoods at that time lived in Suffolk. Maybe she lived there.....oh to have a time machine.
With thanks
Roger