I just checked my 4 books using all the alternative speeling for Buzzard and also for Nancy Drake.Came up with zilch.What I sent before is all that exists.
I would suggest. Check and see if there are any look up people for Knox Co on US Gen Wb. If someone could check the Cemetery Records VOL. 2 (I just have Vol. 1).
See if you can get a will /probate on anybody that is old in that line...hopefully will list kids, married names of girls and where they are.
Go back to the census records....and try to locate them.
I am thinking they moved on and dies someplace else, but crazier things happen.
sorry I can't be more help ...if you come up with any other names give me a yell.I am out of town most of the week here for a while prepping forlicense upgrade exams, but am home on the weekends.....have access to e-mail all week, but no references to use.