Hello!
I came across this thread while looking into an artwork of one Rowland Hill, using "RIP" as a signature. I am a history of art undergraduate with the University of York and one of the main images that I am using in my final year dissertation is a cartoon published 1904 in a periodical called "Truth" and signed "RIP". I have had some difficulties tracking the artist down, but I believe it might be your Great Uncle. I would love to get in touch with you directly and have a chat. My e-mail is id615[at]york.ac.uk. Feel free to get in touch with me whenever!
Thanks!
Kind regards,
Ioana
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