LDS and Scotlands People give a birth at Temple. Thomas Affleck born 1 December 1714 at Temple, Midlothian to William Affleck and Margaret Borthwick. However this would not tie with a putative marriage in 1729 as he would have only been 15 at the time.
The marriage at Carrington, Midlothian is on 26 June 1729. Helen Nicol is described as of the parish of Halla. A cross-check on LDS gives the parish where the banns were read indeed as on 25 Aril 1729 at Fala And Soutra, Midlothian. Fala is 7 miles dues east of Carrington. I cannot find a suitable Helen Nichol birth in ScotlandsPeople
Fala and Soutra, a parish containing, with part of the village of Faladam, 393 inhabitants, of whom 112 are in the village of Fala 8½ miles (S. E.) from Dalkeith. The patronage of the church of Fala, of which the history is very obscure, belonged previously to the Reformation to the family of Edmestown; and in the year 1618, on the 20th February, the two parishes were united. The church of Soutra, having been abandoned, became a ruin; and the walls of one of its aisles, and some occasional irregularities of surface indicating prostrate dwellings, are now the only vestiges of the former village, once so considerable and populous.
Carrington"The village, sometimes called Primrose, stands 3 furlongs from the south Esk's left bank, 2 miles West South West of Gorebridge station, 3 miles South East of Hawthornden and 5¼ miles south by west of Dalkeith. The parish is bounded North by Cockpen, East by Borthwick, South East by Temple, South by Penicuik and South West, West and North West by Lasswade." (Extract from Ordnance Gazetteer of Scotland 1885) " This district was anciently the estate of the Dalhousies, and afterwards of Sir A. Primrose. The workpeople are employed in the neighbouring mines. The surface rises at the Muirfoot hills to the height of 1,860 feet. The living, worth £158, is in the presbytery of Dalkeith, and in the patronage of the Earl of Roseberry, a descendant of Sir A. Primrose. The parish is about 4 miles long and 2 broad." "Thornton, a village in the parish of Carrington, county Edinburgh, Scotland, near Borthwick." "Whitefaugh, a hamlet in the parish of Carrington, county Edinburgh, Scotland, 3 miles S. of Lasswade." The National Gazetteer of Great Britain and Ireland (1868)
In 1733 a Margaret Afflect is born on 28/01/1733, daughter of Thomas Afflect & Helen Nicol at Carrington or Primrose, Midlothian. Cockpen (where she eventually married) and Carrington (where she was born) are within 3 miles of each other. Margaret is the daughter of Thomas Afflect and Helen Nicol, as her birth entry says "Margaret procreat betwext Thomas Afflect & Helen Nicol was born the 25 Jan 1733 and baprised 20th January."