After studying the JD rifle pictures sent to me from anonymous, I would say very very high probability(99% sure) that your friends rifle was made by J.D. aka Jacob Deemer. The trigger is also a dead nuts copy of the trigger on my J.D piece. The box, the comb inlay, toe plate, and the engraving match closely with anonymous rifle. This additional rifle puts the total # of JD rifles to 5 that I have encountered since acquiring my longrifle. That number includes the one pictured in the red patchbox book. I have been told about another from another collector friend but have not yet seen pictures. I know that finding information about Nicholas Hawk is even quite scarce, so too an apprentice harder still. Thank you John for aiding your shy friend with this very sweet little rifle! Please tell him thank you, from me! Joel