Mary Wilson Married Three Times. Her First Marriage is Direct to us through its progeny. Her second was so the son of our directs Miles Cary and Anne Taylor with whom she also had children. Her third marriage was to Archibald Blair, who married himself three times, and who had four children, three of whom MAY have been Mary's [or his other wives']. 

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• "brother of Commissary James Blair of William and Mary College, and the father of Honorable John Blair, President of the King's Council."^{13, 14}Honorable John Blair is discussed below
• Dr Archibald Blair was married at least three times .Dr Archibald Blair had four known children, one of whom's mother is identified 
• 1st Wife of Dr Archibald Blair : Name Unknown. Son of this first wife is : 
• John BLAIR , died 1771, President of the Council and gov of Va 1757  John Blair had amongst MANY others a daughter:
• Sarah BLAIR , who "married Col. Wilson Miles Cary, of Ceely's (Cary Bible)"¹³This Col Wilson Miles of Ceelys who married Sarah BLAIR  is not further identified by Mary Seldon Kennedy¹³ It may be, as chronologically it fits, that he is the Col Wilson Miles of Ceelys identified as a son of Mary Wilson [here discussed, wife to William Roscow, Miles Cary and  Archibald BLAIR] and Mary Wilson's second husband Miles [Col]  Cary .  This author continues to research this possibility. 
• 2nd Wife of Dr Archibald Blair: Sarah , probably ARCHER, and they were married by 1703, and she dead by ca 1720 when he married for third time
• 3rd wife of Dr Archibald Blairwas Mary Wilson Roscow Cary here discussed
• Dr Blair's three other children's birthdates are not known making identification of their mothers difficult. Any but John could have been a child of Mary Wilson Roscow Cary Blair. Children of Dr Archibald Blair of uncertain matrilineage are: 
• James BLAIR , died about 1733

Kennedy, Mary Selden , in her ì Seldens of Virginiaî  vol.1 Frank Allaben Genealogical Company. New York. 1911.  writes of him and his son: îJames Blair, second son of Dr. Archibald Blair, died about 1773, when Archibald Blair, 'his infant orphan,' made choice of John Blair, Esq., as his guardian. (York County Records.) Archibald Blair died Oct. 7, 1824, aged 71. He married Molly Whiting, of Glocester, in 1787. He was Clerk of the Council, and Clerk of Committee of Safety during the whole Revolution. Mary, his daughter, married in 1822 John Minor Botts. The will of Archibald Blair, dated in 1809, and recorded in Richmond, May 17, 1825, names children, John, Beverly, Archibald, and Mary." 
• Elizabeth BLAIR,  died 22 Apr 1775. Married first Major John Bolling, Jr [1700-1757] and had three children:
• John BOLLING [1730-1790s] married  Martha Jefferson, sister to the President of the US.
• Mary BOLLING [born 16 Jul 1744, married Richard BLAND (1730-1766) ]
• Archibald BOLLING [born 20 March 1750 , married Sarah CARY (died bef 2 Feb 1774) ,  2nd married on 2 Feb 1774 Jane RANDOLPH, 3rd married 1797 the widow BYRD, and finally married the widow CLARKE] 
Elizabeth BLAIR ,  died 22 Apr 1775. married second NN BLAND.
• Harrison BLAIR , married Dr George Gilmer, of Williamsburg, Surgeon and progenitor of Gilmers in Virginia