In the 1850 census for North Carolina, there is a Sarah Westbrook with children Robert and Cornelia of the expected ages. She is living next door to Randolph and Happy Westbrook. Also in that household is a Nancy Westbrook.
In the Person County, North Carolina Deed Books 1792-1825, page 202, it looks like Randolph was a witness to the transfer of a deed:
228-9 Ira Lea to John H. Jones, for $300, 106 acres on Richland Cr adj John Westbrook on still house br, William Westbrook. 15 Nov 1824. Wit: John Rice, Randolph Westbrok
