According to this week's prompt: "This fine figure of a woman is either ‘Boadecea or Mother England’ or possibly Britannia. You can choose; or go with armour, helmets, shields, fancy dress, pantomime, theatricals, warlike women or big sticks".
I thought of chorus girls, from an earlier age. and went to my favorite on-line resource, American Memory of the Library of Congress.
From the archives of the Chicago Daily News: "Full-length portrait of Marie Saxon wearing a devil costume, standing with two women, with three chorines, also known as chorus girls, standing behind her. Text on image reads: Miss Marie Saxon and Chorines." There is no further explanation for this picture and I am unable to answer any of your questions, sorry. I have plenty myself!
This is a post for Sepia Saturday - joining rather late this week!