The copyist who created these books is unknown.
Samuel G.T. Heatley (more commonly known as Heatly) was a member of the Asiatic Society of Bengal, serving as one of its secretaries in 1847. He was a geologist and contributed articles to the Society's Journal.
Johannes Gerhard Frederik van Overmeer Fischer began as a clerk at Dejima, the Dutch station in Japan, and he was later promoted to warehouse master. During the span of his stay in Japan, Fischer's access to Japanese culture was limited but he amassed a considerable collection of objects. This material was taken back to the Netherlands in 1829. In 1833, he published Bijdrage tot de kennis van het Japansche rijk (Contribution to the knowledge of the Japanese Empire).
The creator of the translation is not known other than by the surname 'Brown'.