William Herbert (died 1645)

William Herbert (died 1645) was a Welsh politician and landowner, best known for his role during the English Civil War. He was a Royalist, supporting King Charles I against Parliament.

Herbert was likely a member of the prominent Herbert family of Powys, though specific genealogical details connecting him definitively to a particular branch require further research. He held lands and influence in Montgomeryshire (modern Powys, Wales).

During the Civil War, Herbert actively raised troops and resources for the Royalist cause in the region. Montgomeryshire was a contested area, with shifting allegiances and skirmishes between Royalist and Parliamentarian forces. He served as a commander of local Royalist militia.

William Herbert was killed in action in 1645. The circumstances of his death are not precisely documented in all sources, but he died while fighting for the Royalist cause, likely in one of the many smaller battles or sieges that characterized the conflict in Wales. His death contributed to the weakening of Royalist control in Montgomeryshire.