- Founded by sons of John Douglas and brothers of Cecilia Douglas (q.v.)
- Branch in Berbice, Douglas, Reid & Co.
- Glasgow 3/3/1815 Alexander Falconer ceased to be a partner in the company undertaken for some years past by the subscribers (as sole partners) under the firm of John Thomas and Archibald Douglas in Glasgow, Douglas, Reid & Company of Demerary and Berbice and for some time at Liverpool as Douglas M'Intyre and then as Colin Douglas and Company; and also that by the decease of James Reid, a late partner, in December 1810, his heirs and representatives have had no part in the company since April 30 of that year. Subscribers were John Douglas, Thos. D. Douglas, Archibald Douglas, A. Falconer, John Douglas as attorney of John Douglas and A.Falconer for himself and for William Morrison, executors of James Reid.