Mrs. Siddons 

"Mrs. Siddons," is a charcoal drawing by Hercules Brabazon Brabazon, a prominent Irish artist known for his distinctive style. This portrait, likely an informal sketch, captures a woman, potentially the famed actress Sarah Siddons, in a simple, elegant pose, with a hint of a feathered hat. The loose and gestural lines suggest a quick study of a sitter, capturing her essence rather than precise detail, reflecting Brabazon's focus on atmosphere and feeling.