HELP ,where was it made/Maker,,1800s

I have a beautiful piece of silver that has great bit history from south carolina,i bought this lil cup at an estate sale,did some research on it ,and found it was owned by the largest slave owner in america,and was the 44 LT.Governor of sc.,has beautiful grapevines on side ,there are only two marks on bottom of cup,i have looked and looked,with no luck,i know it is pre 1850,please tell me where and when and what this piece is,thanks [/b] it is engraved on side ,j.a. Hemingway from j ward,thats how i found the info on the cup ANY INFO WOULD HELP, AND BE GRATEFUL,THANKS