"Sail y nofel hon yw hunangofiant Maria Stella Petronilla, Barwnes Ungern-Sternberg ac Arglwyddes Newborough, a gyhoeddwyd ym Mharis ym 1830" - t. 240 = p. 240.
Pietà by Gwen Pritchard Jones. ISBN 9781907424069. Published by Gwasg y Bwthyn in 2010. Publication and catalogue information, links to buy online and reader comments.