My ancestors lived at "Blackburn", Scatwell in the parish of Contin around 1820 - four of their children were born there.
I visited there a couple of weeks ago and learnt that Allt Dubh means Black Burn in Gaelic. This stream is shown on an 1876 map entering the main river about 1.0 kms before the main Scatwell House (to the east). Today there are several houses there and a small bridge just on the Contin side.
The parents names were: Murdoch McLennan and Mary Nicolson - they would possibly have been born about 1795. I have no more detail about the parents.
Their first child, Donald McLennan, was born at Alness in 1815. The other children were:
Catherine McLennan (born 1817, Scatwell)
Janet McLennan (born 1820, Scatwell)
Chistian (or Christine) McLennan (born 1822, Scatwell)
Kenneth McLennan (born 1825, Scatwell)