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There is a fantastic and very detailed biography of William Kerr, all based on the primary sources, and all freely available online here https://archive.org/stream/correspondenceof00bann#page/n82/mode/1up. Apologies for dropping and running, but i don't have the time myself to update the article, but if anyone fancies it all the info you could want is at the above link Lewisly ( talk) 22:01, 4 December 2013 (UTC) reply