I am removing the date (1826-) from the page for R. D. Humphreys, and reassigning compositions previously attributed to Joseph Humphreys to R. D. Humphreys (e.g. EXULTATION (Humphreys). Since his works appear mainly (entirely?) in the 1820 Supplement to the Kentucky Harmony, R. D. cannot possibly have been born in 1826. It is however possible that he may have died that year. I haven't found any source for his lifespan. Joseph Humphreys, as far as I can tell, was a text hymnist, not a composer.