Thanks again; it's always interesting to see what my searches have missed.  I agree that the Stanway game is probably not Latrunculi, though we don't know how far people may have tinkered with it.  What puzzles me is that the two bigger pieces were colored the same, and not like members of the two opposing forces.  I want to reconsider the whole subject, and see how far the descriptions would apply to the spirited games of Twelve Men's Morris, or Merels, that my son played with me when he was a boy.  That's about it for the moment; I will keep watch for further developments.