In 1757 these two had a child, baptised Robert Douglas, in Cockpen. The father was evidently present and indeed seems to have signed his name on the register (in a wrong place, after another birth) and there is a crossed out start to a record, in the same hand which is very different to that of the clerk. The 'right' entry is written just below by the clerk, saying 'Robert natural son to Robert Douglas and Mary Cass'.
The next entry involving this couple is in the Newbattle marriage register for 1st March 1759, reading 'Robert Douglas and Mary Carse owning that they were clandestinely married 11th May 1758 were by this Sess. declared married Person and paid the Church Dues'. A second child Francis Douglas was baptised in Newbattle 'before the Session' on 15th April 1759, but no birth date is given for this child.
I am interested in the use of the term 'clandestine' rather than irregular. Has anybody else come across this? It may simply be the session's preferred word in place of irregular, or might mean something else, a hidden or secret marriage.
I had some hopes to find something in Cockpen kirk session minutes for 1757, but alas from the NAS catalogue there doesn't seem to be a volume covering that date.

The couple had several later children born in Lasswade, Carrington and Crichton parishes, David, Agnes, Shealto and Jean.
Jenny