Hello Denise,
I found your Quintina's mom today in William Baskervill Account Book 1799-1803. It reads, Quintina daughter of Beckey born January 25, 1813. There are other entries for Beckey as well. Lydinanna daughter of Beckey born April 30, 1811, died small. (don't know if small means small pox or as a youngster). There is a Beckey daughter of Sarah born June 26, 1801, don't think that is your Beckey. Now this is interesting, Jacob son of Beckey, purchased of Edmond Wall, is supposed to have been born about the 24 March 1799.
Let me know if you need copies, could scan & e-mail, or fax. I tried calling you but it seems that you converted that number to your fax line.
Kim