A member of the Royal Academy, Gastineau was a prolific artist exhibiting up to his death at the age of 85.

He was in his forties when he painted the Haverfordwest priory and was a well-established and highly regarded artist.

Originally a water colour picture it was reproduced in “Wales Illustrated In A Series Of Views” published in 1831

There is also a hand tinted version of this picture which was sold as a print although it appears to have been cropped.