Harriet Mary (?) married Edward Johnstone c.1830 possibly in Brazil. She was born c. 1810 n Flushing, Holland & died Dec. Q 1885 at Kensington, London.
This site has some limited information about the Johnstone family .http://www.thepeerage.com/p19437.htm#i194364
Gratefu lfor any help.
Bill_N