I may be a little off the grid here, but the KILLIBREW name caught my eye. No relation to you. You may already have this info, but am passing along to you. I have a book of Edgecomb family wills 1733-1856. There are two Killebrew family listings; one with Charlotte mentioned in the will,.
Jan 04 1793 Feb. Ct 1783. Wife, Susannah. Children: CHARLOTTE, Lovel, Geraldos and Dolly. George Washington Killebrew.
There a Rebecka Killebrew also listing her will with one sone Caldwell and grandsons, Joshua Roberson and David Roberson, John Roberson, Susan Roberson, Rebecca Roberson. also Emily Killebrew, daughter of Joshua.
Just passing along a bit of info. you may be able to use in your family.