Owen Williams was a Member of Parliament for Great Marlow

Great Marlow (UK Parliament constituency)

Great Marlow, sometimes simply called Marlow, was a parliamentary borough in Buckinghamshire. It elected two Members of Parliament to the House of Commons between 1301 and 1307, and again from 1624 until 1868, and then one member from 1868 until 1885, when the borough was abolished.-History:In the...

 from 25 May 1796 to his death 23 February 1832.

He was the son of another MP, Thomas Williams of Llanidan (died 29 November 1802) with whom he served from 1796 to 1802. His son Thomas Peers Williams

Thomas Peers Williams

Lt.-Col. Thomas Peers Williams was MP for Great Marlow 1820-1868 and December 1867-1868.Peers Williams live at Craig-y-Don near Beaumaris on Anglesey and Temple House at Bisham in Berkshire, near Marlow...

 was another MP for Great Marlow, and so was his grandson Lt-General Owen Lewis Cope Peers Williams (died 1904).

Williams was married to Margaret Hughes, possibly daughter of his father's partner Rev. Edward Hughes, of Llysdulas (or his brother Michael Hughes), and had issue, at least one son, Thomas. His English residence was Temple House at Bisham

Bisham

Bisham is a village and civil parish in the Windsor and Maidenhead district of Berkshire, England. According to the 2001 census it had a population of 1,149. The village is on the River Thames, north of which is Marlow in Buckinghamshire...

 in Berkshire

Berkshire

Berkshire is a historic county in the South of England. It is also often referred to as the Royal County of Berkshire because of the presence of the royal residence of Windsor Castle in the county; this usage, which dates to the 19th century at least, was recognised by the Queen in 1957, and...

, very close to Marlow.