Iorwerth, ancestor of the EVAN’S of Tan-y-bwlch, and ELLIS’S of Brenbwll.
source: Burke, Bernard. A Genealogical and Heraldic Dictionary of the Peerage and Baronetage of the British Empire, Twenty-Seventh Edition. London, UK: Harrison, 1865.
[S51] A Genealogical and Heraldic Dictionary of the Peerage and Baronetage of the British Empire, Twenty-Seventh Edition, Bernard Burke, (London, UK: Harrison, 1865).