To Sandy Chacko and others ... while there's lots available online, two terrific books are available on Amazon:

The Dunbar Martyrs: Scottish Prisoners of War in Durham Cathedral, 1650 | Webb, Simon
The Involuntary American: A Scottish Prisoner's Journey to the New World | Gardner, Carol

Mark Johnson

1. Malcolm MacCallum 1630-1683, SPOW, 8th great-grandfather
2. Caleb Callum 1664-1716
3. John Callum 1700-1754
4. Jemima Callum 1728-1776
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11. Mark Everett Johnson 1956-