From the booklet "Historical Atlas of Westmoreland County, Virginia" by David Eaton:
"Page 47 - Charles Kill patented 353 acres and also 8 acres on Oct. 15, 1694, from the proprietors of the Northern Nect. In his will made Jan. 4, 1749, and probated Jan. 30. 1749, he left this land to his wife, Mary Kill, during her life, and at her death to Charles Weeks Steele. This is the land now known as Montrose and Roxbury, and at the date of patenting it adjoined the land of William Ball,who owned part of Ingleside and Walnt Hill farms. The widow Mary Kill married William Elliott."
I am not researching these families, and have no further information.