Pamela.. I found among some of my old notes of over 20 years ago this small tidbit on Hannah DARBY:
Michael DARBY in 1710 was of St. Thomas Parish, SC; 7 June 1734 was named assistant Justice of the Peace for Berkeley Co., SC; died feb 1739; married 21 May 1717 Mary WARNOCK and had: 1.Hannah DARBY, b. 21 Sep 1718; married Benjamin SINGLETARY who was son of Joseph SINGLETARY and Hannah DUNHAM.
I'm sorry that's all I have except for some siblings of Hannah listed.
I am not connected to this family but recall these names while doing some research for a cousin of mine, many years ago.Hope this helps you in some way. Jerry Derby