I am seeking to find out where Caervalloch Wales is. My 5th great grandfather Richard Ireland Jones was born in London in 1770. His father, Arthur Jones was buried in St. Olave's Church London and married Ann Fisher Ireland in 1761. Arthur's father was Thomas of Gwerny Marle in Caervalloch. He married Elizabeth Corbett in 1681. I am unable to locate Caervalloch and Gwerny Marle. I assume the names have changed.