Question: Who is the paternal grandfather of John Roberts, 1St Baron Clwyd?
Sentence (from "John Roberts, 1st Baron Clwyd"): John Herbert Roberts, 1st Baron Clwyd (8 August 1863 – 19 December 1955), known as Sir Herbert Roberts, 1st Baronet, from 1903 to 1919, was a Welsh Liberal politician.
Relevant evidence: No