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an American sales and marketing manager, and consultant of [https://en.wikipedia.org/wiki/Electric_power_conversion Electric power conversion] technologies.
As former systems programmer and supervisor at [https://en.wikipedia.org/wiki/Cromemco Cromenco] with interests in chess and computer chess,
and he worked with [[David Kittinger]] on [[MyChess]], he becames its [[:Category:Opening Book Author|opening book author]] <ref>[[John Urwin]] ('''1979'''). ''Two New Programs Are Tested''. [[Personal Computing#3_12|Personal Computing, Vol. 3, No. 12]], pp. 71</ref>.