I have checked a little more for you, the chapel does not show on a 1879 map but shows on a 1900 map (no name) as Chapel/Morgue/Cemetery in Ddol Ddu area, one of the modern roads nearby is also called Ddol Ddu which is what they did in that area when they built on land where a farm etc used to be. The link i told you about does not cover this one, the two for Llanelian i think cover for the one on the hill to the village (half way up on the right) and the one in the village itself