As usual, there is a lot to do. Just looking at
http://en.wikipedia.org/wiki/User:Magnus_Manske/Your_Paintings/A
some of the blue links look plausible. Samira Abbassy appears in "Artists in Britain Since 1945", a reference work with 14,500 entries that can probably solve many cases of identification. "Edwin Abbot" runs at the moment to a disambiguation page, and I didn't immediately see how to deal with it. I've been coming across relevant artists by chance who are in the "Dictionary of National Biography'', and am happy to set up pages for those people.
Charles