Rhynie's most famous son is probably Alexander Murdoch Mackay (1849 -- 90), who served as a missionary in Uganda from 1876 to 1890: had some difficult times there, but short of actual martyrdom for his faith -- his death, aged 40, was from malaria. Another 19th-century missionary stalwart in the -- broadly speaking -- African realm, was David Griffiths (1792 -- 1863): his missionary activity was in Madagascar, 1821 -- 42 --with some interruption owing to (as befell Mackay in Uganda) un-keen-ness on Christianity on the part of local rulers. Griffiths translated the Bible into the Malagasy language; after returning to Britain, he continued with Malagasy-language-related work. Griffiths was born near Llangadog, Carmarthenshire.