Eduard Magnus (January 7, 1799 – August 8, 1872) was a German painter, primarily known for portraits.
https://en.wikipedia.org/wiki/Eduard_Magnus
Johanna Maria Lind (6 October 1820 – 2 November 1887) was a Swedish opera singer, often called the "Swedish Nightingale". One of the most highly regarded singers of the 19th century, she performed in soprano roles in opera in Sweden and across Europe, and undertook an extraordinarily popular concert tour of the United States beginning in 1850.
That is truly in incredible portrait.