The family of Robert Shedden and Margaret Simson lived in Morrishill in the Parish of Beith, Ayrshire, Scotland.
This family are of interest because ancestry.co.uk has found a DNA match between a descendant of Robert and Margaret's Son, John, and a descendant of Alexander Hall Shedden from Trivandrum in South East India.
So far, I have not been able to find any documentation to prove the connection.
The most credible source of information I have found regarding Robert Shedden and Margaret Simson comes from the Memoir of William Wilson of Crummock.
Some of the dates in the memoir can be confirmed from the Old Parish records of Scotland available at scotlandspeople.gov.uk
I copy below extracts from that memoir:
ROBERT, second son of John Shedden of Marsheland, born 5th October 1709; went to Virginia as a merchant, where he remained for many years. On his return to Scotland he bought the 20/- land of old extent of Morishill from William Adam, to whose ancestors it had belonged for several generations. In the Disposition, dated 5th March 1748, Robert Shedden is designed “merchant, residing in Marsheland.” In 1755 he purchased from Neil Snodgrass certain parts and portions of the four 12/- lands of Townhead of Braidstane, called the Longcroft, Hillhead, &c., the Disposition being dated 23rd May of that year. He also purchased from his brother, John Shedden, younger of Marsheland, certain other parts and portions of Townhead of Braidstane called the Shortback of the hill, Hillhead, &c. The Disposition is dated 26th November 1757.
Robert Shedden married, on 6th February 1752, Margaret, eldest daughter of Mr William Simson of Willowyard by his second marriage with Elizabeth, daughter of William Moore, younger of Bruntwood, in the parish of Galston. By her he had issue:-