Alright I'll update the thing about his general communication skills (though I didn't mention he could write) and specify the inventory.

Bowie knife? From Wikipedia:
[i]"bla bla bla... in common usage the term refers to any large sheath knife with a crossguard and a clip point."[/i]
or
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[url]https://www.google.ee/search?q=bowie+knife&client=palemoon&rls=Palemoon:en-US&channel=fflb&source=lnms&tbm=isch&sa=X&ei=uspLVbnePOa8ygOxjoGwDQ&ved=0CAcQ_AUoAQ&biw=1920&bih=1055#[/url]
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As for the skill. Do you mean I should go more into detail? It's pretty much a general herbalism skill so he can recognize and use various plants for different purposes such as creating poisons, remedies or simply seasoning.