In 1892, Rose Cooper donated a painting (as did her sister Mrs Emily Latham GREENFIELD) to the fund for restoring the organ in St Johns-in-the-Fields, the Anglican church at Halsetown, near St Ives.
The 1901 Census lists as an artist/painter the 60 year old sister of the head of household (Mrs) Emily GREENFIELD, living in Bellair Terrace, and from Brighton. Tovey also references her as a painter who took part in the social entertainments provided by the artists. Photographs of Rose Cooper in theatrical costume are reproduced in his book 'St Ives : A Social History', and she is listed in subsequent masquerades.
1901 Census returns
Hardie (2009) Artists in Newlyn and West Cornwall (p320)
Tovey (2009) St Ives: A Social History (photos, pp209 & 337)