From my assorted notes on Guyana (British Guiana), I have extracted the following that may (hopefully) or may not (regrettably) be of assistance sometime.
Guiana Chronicle Friday 26 June 1835
Died yesterday afternoon, much regretted Margaret, youngest daughter of Hugh Douglas, Esq., formerly of this colony.
The Guiana Chronicle, Wednesday, December 18, 1839
An alphabetical list demonstrating the Respectability, Talent and Station of persons including planters and merchants who subscribed to the Dinner in honour of his Excellency THE GOVERNOR. shows: Sholto Douglas
Government Notice dated 1854 ..Pursuant to Ordinance No. 18, of the year 1851, His Excellency the Lieutenant- Governor is pleased to order the following List of Justices of the PEACE for the Colony of British Guiana, residing in the Counties of Demerara, Essequebo, and Berbice, respectively, to be Published for General Information:- Co. Essequebo: Douglas, John Alleyne Planter Wakenaam
The Official Gazette of British Guiana, Saturday 13 October 1855 List of men qualified to act as Jurors
Douglas, Charles Fox St. Saviour Carpenter Landed Proprietor, Corentyne Cst, Berbice
Douglas, Archibald New-A. Merchant Income
An index of BDMs in The Argosy Newspaper, Georgetown, British Guiana for 1880-1896 has the following entires: Douglas in 1882, no Telfer but one entry for Telford in 1894 and Ritchie in 1888, 91 and 92..
Copies of these newspaper are to be found at The British Library Newspaper Library, Colindale Avenue, London NW9 5HE England and also at the Public Record Office, Kew, Richmond Surrey TW9 4DU England and a copy of the full extractions is held at the Society of Genealogists, also in London.
British Guiana 1882 Directory has the following entries:
5 for Douglas, no entry for Telfer and 2 for Ritchie.
Douglas, Geo., compositor, 184 Waterloo Street
Douglas, R.A., clerk, Pasley, Templeton & co. Berbice
Douglas, S.L., Pan Boiler, L'Union, Essequebo
Douglas, T.C. clerk, S. Davson & co., Berbice
Douglas, W.A., clerk, S. Davson & co., Berbice.
Ritchie, Alexander, Overseer, Philadelphia, West coast, Demerara
Ritchie, D., Overseer, Bath, Berbice.
Regret I have no further information.
Researching in Guyana: Bagot, Cuming, Ferguson,, Forbes, Forte, Gardiner, Loxdale, McMahon, Macnamara, Stack, Steele and Walker.