"The Rescue Dog – A Staffordshire Earthenware Group & Its Possible Original Source" posted 13 March 2018 at harryprogger.com: "Marianne A. Barker (b.1802-d.1888)…married naval officer Captain George Wallace in 1826 and is known to have exhibited a total of fourteen works at, amongst other, the Royal Academy and the British Institution between 1820 and 1848."
hyperallergic.com
This work was prominently displayed in the exhibit Le Roi es mort (The King is Dead) at the Palace of Versailles, 27 October 2015 to 21 February 2016; reviewed here.
leroiestmort.com
This work was prominently displayed in the exhibit Le Roi es mort (The King is Dead) at the Palace of Versailles, 27 October 2015 to 21 February 2016; reviewed here.
Sarony Exhibition Part 2 includes the story "Sarony the Shark" that tells how Barker's 1871 paintingThe Spa Promenade came to be, and a key to 82 people in the picture.