David Davis (Grocer)  
There is a tomb in the graveyard to David Davis of Blaengwawr who started life as a grocer and draper in Hirwaun. He prospered and sunk collieries as Blaengwawr (1843) Abercwmboi (1851) and Ferndale (1862). David Davis was one of the directors who built the Penarth Docks due to the increase of taxes from Cardiff.