Sir Trevor Williams, 1st Baronet (c. 1623 – 1692) of Llangibby (Welsh: Llangybi), Monmouthshire, was a Welsh gentry landowner and politician who sat in the House of Commons at various times between 1660 and 1692. He played a significant part in events during and after the English Civil War in South Wales, siding first with King Charles, then with the Parliamentarians, before rejoining the Royalists in 1648.
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Family and lineage
Trevor Williams was a descendant of a marriage in 1300 between Howel Gam ap David of Penrhos Castle and Joyce, a daughter of the Herefordshire based Scudamore family. Roger Williams, Trevor's grandfather and High Sheriff of Monmouthshire, acquired Llangibby Castle in 1545 and adopted the surname Williams (derived from his father's name, William) in 1562. His son, Charles, who became M.P. for Monmouthshire and was knighted in 1621, also became Sheriff of Monmouthshire in 1627. Sir Charles, Trevor's father, was a noted Puritan who presented a fine Jacobean pulpit with the text "Woe Be to Me if I Preach not the Gospel" to Caerwent church in 1632. He died in 1642.
English Civil War
In 1642, Williams, as a well connected local man and strong Protestant, was appointed by the King with a Commission of Array. At the outbreak of what was to become the First English Civil War, this gave him responsibilities for raising an army within Monmouthshire for the King, and holding the county against opposition. He was also created a baronet (one of several Williams baronets in Wales). Having set about his allotted task he was captured by Parliamentary forces in 1643 at Highnam during the Siege of Gloucester. After his release, he set about fortifying the ruined medieval Tregrug Castle at Llangibby, beside the Caerleon to Usk road, and garrisoned it with 60 men. In 1644 he helped lead operations around Monmouth. After the town was lost to the Parliamentarians he pleaded with Prince Rupert for more men and ammunition, following which he helped lead its recapture.