I have been trying to find information on the family of Mary Hutchison and found this paper in the records of the Montgomery County Historical Society (MD), written by Eleanor Cook, 1987:
"Will of William Hutchison, dated 13 December 1708, probated 23 April 1711, gave to his daughter Mary 1/2 760 acres White Haven" (as well as quite a bit of other land which was in Charles Co. at that time but some is now in Montgomery County, the District of Columbia, and Prince George's Co., MD.)
"Records of King George's Parish, also known as Piscataway or St. Johns at Broad Creek list 'John Abington married Mary Hutchison on 20 October 1715.William Abington, son of John and Mary Abington was born 1 October 1718; Anne Abington, daughter of John and Mary Abington was born 10 August 1720."
"John Abingdon was the son of Andrew Abingdon.St. Richard's Manor, 1000 acres on the south side of Patuxent River in St. Mary's County, was surveyed in 1640.It was later sold to Richard Keene, who sold it to Andrew Abingdon.Andrew, by his will proved 9 November 1691, bequeathed it to his son John Abingdon. ('Across the Years in Prince George's County,' by Effie Gwynn Bowie, p. 474)"
"John Abington of Prince George's County executed a will 8 Dec 1738, probated 15 June 1739. 'To daug. Sarah and hrs. 307 A. Huntington, bou. of Mr. Dulany, also certain personalty on sd. plantation.Son Bowles and hrs., real estate not otherwise bequesthed.Son John and hrs. 800 A. of St. Richard's Mannor, St. Mary's Co., Vineyard and Addition to Vineyard; also White Haven.Son Andrew and hrs. testator's share of Weswork and Friendship.Extx, wife Mary.Testator directs that a debt of 50 pounds due to hrs. of late Tobias Bowles, of London.(there is further information) Test: John Hawkins, Sr., Thomas Dawson, John Dawson."(I don't know why the children William and Ann are not mentioned; however in an additional account, dated 15 March 1744, "mentioned money sent to William Abington, son of John Abington and money paid to John Needham in lieu of 4 negroes bequesthed to his wife Sarah."
A note at the end of John Abington's inventory states "John Needham, who intermarried with the daughter of John Abington, has been requested to sign the inventory, which he refused to do, and all the children of John Abington are under age. (Inventories 27, f. 345)"
"His widow married Doctor Andrew Scott by 29 June 1739."
"Andrew Scott and Mary his wife by a certain indenture made 17 April 1741 of George Attwood, conveyed a tract called Speedwell to the use of Andrew and Mary during their natural lives and the life of the longest liver and then to the heirs of Mary.Now therefore, Andrew and Mary in consideration of natural love and affection Mary Bears to her son Bowles Abington, (Bowles was mentioned later as the oldest son) convey to Bowles Abington, after the death of Andrew and Mary, the tract Speedwell containing 130 acres, adjoining the dwelling plantation of the late John Abington.Bowles is to renounce and surrender his right to the tract Vineyard containing 76 acres to his brother John Abington.Deed signed by Andrew and Mary Scott. (PG Deeds BB31, f. 339); 17 April 1741."
"15 June 1745 - "Andrew and Mary by indenture of 17 April 1741 conveyed to George Attwood tracts Saturdays Work and White Haven.In consideration of love and affection that Mary has to her sons Bowles Abington, John Abington and Andrew Abington, one acres in each of the tracts was conveyed to them. (PG Deeds BB31, f. 350)
There is further information which I will add later.