The parish register entry for the baptism at Arkengarthdale - 18 August 1811 - Simon son of Simon and Sarah Colling of Arkletown (that's what it looks like

)
Simon Colling, son of Thomas Colling, baptised 27 February 1773.
Marriage as posted by keyboard86.
Obviously a number of Colling families in the area in the 1700s.
AND all the entries are written as COLLING