From https://biblicalstudies.org.uk/pdf/cbrfj/vols/16.pdf
"At both Tottenham and Hackney there was great missionary interest. George Pearse who was in the little study group that Gosse described, and Richard Ball of Taunton who had left the Society of Friends about the same time as the Howard brothers,1o began to edit in 1850 The Gleaner in the Missionary Field which in 1853 became exclusively occupied with work in China under the name of The Chinese Missionary Gleaner. 11"
"Ball was baptized by immersion by B. W. Newton, at Exeter in 1837, Inquirer vol. 1 p.64."
The website http://genealogy.kolthammer.org/ contains some details of George Pearse and his second wife Jane (née Bonnycastle). Perhaps the compiler, Jennifer Kolthammer, has access to unknown sources. In 2014 she could be contacted at jenkolt@gmail.com. Pearse and his associates are a very shadowy circle of Christian endeavour which is well worthy of systematic research... All power to your elbow!
As I recall, the OMF have custody of what remains of the Chinese Evangelization Society's archives which would cast light on Pearse's earlier work.
Pearse eloquently expressed his appreciation of A N Groves's 'large-hearted . . . principles', in a letter reproduced by Groves's widow in the second edition of her husband's Memoir. Timothy Stunt
