The will of George Marable of Westover Parish, grandson of the immigrant, is abstracted in Williamsburg Wills, at page 38:

The date that this will was made in Westover -- 4 July 1776 -- symbolizes the beginning of the colonies' War of Independence. The end of that War touches Westover as well. It was at Westover that General Cornwallis crossed the James River on 24 May 1781 to initiate his Virginia campaign which led, ultimately, to the British surrender at Yorktown on 17 Oct 1781.

Modified last on June 28, 1996 by James L. Marable.
(Comments and suggestions welcome.)