I was interested to see this thread resurrected, as I was researching Robert Candrick's line a few years ago for a friend of mine, who is descended from him. I can see your tree on Ancestry, Carandalex, so I know it's the same family. I used to live in Trecastle, so I knew the area well - now I'm living near Cwmdu where Robert Candrick and family were living in 1851.
Regards
GS