Portrait of Mrs. James W. Wallack, c1828. In 1817 James William Wallack, actor and theatrical producer, married actress Susan Johnstone, who was daughter of John Henry Johnstone (known as Irish Johnstone, a singer, comedian, and member of the circle of the Prince of Wales). She enjoyed successful comic roles using her maiden name. In 1818 and frequently after that she came to New York with her husband. Mrs. Wallack died in 1851.