Original sentence: At the Haymarket, on 16 November 1861, she was cast as Mary Meredith in Our American Cousin, on Sothern's first appearance as Lord Dundreary in London
Edited sentence: At the Haymarket, on 16 November 1861, she was cast as Mary Meredith in Our American Cousin, on Edward Askew Sothern's first appearance as Lord Dundreary in London