HCR diary 29.12.1821 "Evening at Aders - the Masqueriers, Jenkins and a Mr & Mrs Dubusson were there - musick and engravings produced"
I found two or three possible couples. Thomas Du Buisson of Lawrence Pountney Lane merchant died 1843 at Newcastle upon Tyne age 65, his will PCC 1843. His father Peter will PCC 1813 of Glynhir, Carmarthenshire) had married Margaret Birt on 2.6.1775 at Newland, Gloucestershire, and he married Elizabeth Birt on 23.10.1809 also at Newland. In the 1841 census they were both living at Wandsworth Common.