William Lewis Hughes, 1st Baron Dinorben (10 November 1767 – 10 February 1852), was a Welsh copper mine owner, philanthropist and Whig politician.
Mary had inherited the Llysdulas estate on Anglesey from her uncle, including Parys Mountain, which later became the largest copper mine in Europe and gained the Hughes family great wealth.
[2] William Lewis Hughes was returned to parliament as one of two representatives for Wallingford in 1802, a seat he held until 1831.
[3] The latter year he was raised to the peerage as Baron Dinorben, of Kinmel in the County of Denbigh.
[2] Lord Dinorben died in February 1852, aged 84, and was succeeded in the barony by his younger but only surviving son, William.