Marriage: 15 April 1707 Edinburgh Parish, Edinburgh, Midlothian. It is difficult to read, but is "William Purviss, taylor indweller , to Agnes Skeith sorbitrix (??) to John Kufsell of Braidshaw, both in s.e. parish. Married 15 April 1707"
Braidshaw appears to be in the Parish of West Calder, 20 odd miles south west of Edinburgh. I assume that William Purviss was a tailor dwelling in the city of Edinburgh. And that he married Agnes Skeith (or South) who was a "sorbitrex" to John Kufsell. A "sorbitor/sorbitrex" appears to be a servitor or servant.
The only option for his birth on ScotlandsPeople is : -
1718 born 16/02/1718 David Purves son of William Purves (merchant burgess) and Agnes South of Edinburgh City
The children of this marriage are given on IGI as : -
1. Mary Purves - Christening: 12 July 1719 Edinburgh Parish, Edinburgh
2. William Purves - Birth: 27 June 1714 Edinburgh Parish, Edinburgh
3. David Purves - Christening: 16 February 1718
Edinburgh Parish, Edinburgh
His children (ref Scotland's People) were all given as born to David Purves and Janet Neilson of Edinburgh City
1741 born 13/12/1741 Robert Purves
1744 born 04/04/1744 James Purves
1746 born 18/05/1746 Hugh Purves
1749 born 04/12/1749 Isobell Purves
1752 born 26/01/1752 Jean Purves
1755 born 11/02/1755David Purves