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No I've not heard of him before now, I do enjoy some good old swashbuckling though.

If you are into ~ 3000 pages of a well written, and especially brilliantly researched novel about the times just after Charles II, it is a must-read!
It is mostly about the feud between Newton and Leibnitz, but it does encompass a lot of history.

I've not heard of that feud, sounds interesting.

It was one of the decisive feuds; if Leibnitz would have won, we would live with a different understanding of reality.
A bit like the Freud vs. Reich feud...