Mary (maiden name unknown)Thompson married David Thompson, Sr. before 1748
She died before February 19, 1798
This text from her husband's will shows her name was Mary.
Information from myHeritage.com.
11 June 1749 David Thompson received a land grant for lot # 6 on Patterson's Creek, Fredrick County,Virginia,now Mineral County, West Virginia, for 312 Acres of land. The land was located just south of where highway 46 crosses Patterson's creek between Fort Ashby and Keyser. Almost equidistant between them or about six miles from each town. Very close to Maryland. The will of David Thompson of Patterson's Creek,Hampshire County follows:
In the name of God amen the 28th day of November 1774. I David Thompson of Hampshire County and Colony of Virginia farmer being very sick and weak in body but of perfect mind and memory Viz and touching such wordly estate wherewith it has pleased God to bless me in this life I give and dispose of the same in the following manner.
First I give and bequeath to Mary my dearly and well beloved wife, the third part of my real estate during her natural life and the third part of my personal estate to be disposed of at her death to whom she thinks proper. Also I give to my son, John Thompson, one hundred acres of the land I now live on. I give to my son, David Thompson, one hundred acres of the same tract and likewise I give to my son, Francis Thompson, one hundred acres of the same tract to be equally divided between the said three brothers both in quanity and quality after the decease of my wife. I am leaving and bequesting to my wife, Mary and son, John Thompson, the mill and twelve acres of land---to the said mill to the support and maintenance of my five youngest children Viz Abraham Thompson, Isaac Thompson, Mary Thompson, Jacob Thompson and William Thompson until such time as the five children comes of age. I order that none of the said children shall be bound out by my executors and that my wagon is to be kept on said plantation toward the further support of the said five children and not to be sold and likewise that my sons David Thompson and Francis Thompson shall have an equal share in said wagon towards their improvements on each of their plantations. I leave to my son Abraham a yearling mare colt. I leave to Jacob a yearling mare colt and if it should please God to call any of the said five mentioned children before they have lawfully begotten their part or portion is to be equally divided among the surviving children. I leave to my wife the old black mare and her suckling colt without---or appraising the same. I order and desire that all my personal estate should be sold and equally divided among all my children. I likewise constitute and ordain my wife, Mary, Executrix and my son, John Thompson, executor of this my last will and testament and I hereby disallow, revoke and disannul all and every will by me made Viz. I leave to my son, David Thompson two yearling heifers and a rifle gun to be purchased for him out of my personal estate and to my son, Francis my own rifle gun and likewise 10 pounds to be taken out of my personal estate towards the schooling of my five youngest children which I order my executors to give the said five children this part to a schedule I pronounce appoint and order to be as binding as that I have----of the within last will and testament Viz.
Signed sealed in the presence: David Thompson.
Witnesses: Nicholas Seaver, John Colson, Margaret Colson(her mark) and john James.
23 Feb 1778 Received of Mary Thompson and John Thompson, executors the sum of three pounds 15 shillings Virginia currency for the schooling of three children for one year. James Daugherty. His will was dated 28 November1774 Hampshire County, (West) Virginia. The will was proved April 1777. Mary remarried after David died. The land came into the possession of Rodham James. This land division occurred 19 February 1798 which sets the death of Mary as occurring before that time.