There are 4 titles associated with this firm.

Roche I, Regina Maria. Plain Tales. By Mrs. Roche, author of "The Moor", &c. In Two Volumes. London: George Walker, Publisher of Books and Music, 1814.
Roche I, Regina Maria. Plain Tales. By Mrs. Roche, author of "The Moor", &c. In Two Volumes. London: George Walker, Publisher of Books and Music, 1814.