Good to hear from you re the Falconbridges. Yes, in answer to your question I do have a lot of information about Alex and Anna Maria = is it a family you yourself are researching? If so perhaps I can help you. I have a copy of Alex and Anna's marriage certificate, narratives written by Alex and Anna and edited by the late Prof Chris Fyfe. At the moment am trying to locate the burying place of Alexander and his brother William in Sierra Leone.
Anna Maria's son Francis Blake born 1801, christened 1802 (I believe somewhere I saw that Anna herself died in 1802, perhaps after childbirth. I cannot find my reference anywhere). The descendents of Francis Blake DuBois are many and one was named John Clarkson DuBois. I also have a lot of information about Anna Maria and her family in Bristol.
Dr Alexander was my gr gr gr uncle. I have not found the place of his birth, Fyfe assumed it was Bristol but I am not convinced. I have a feeling it may have been Prestonpans Scotland, or even Antrim where my gr gr grandfather William was born. The family moved to Donegal and mygr grandfather Alexander Falconbridge was born there around 1830. His 4th child Catherine, by grandmother arrived in Australia with her parents and 5 siblings in 1880.The family has strong connections with Ontario Canada where my gr grandfather's eldest brother John Kennedy Falconbridge had a son Sir William Glenholme Falconbridge of the court of Ontario. I have photographs of these people too if it interests you.
I would be very happy to discuss this family if you would like. Valerie