Rice Powell was a Welsh Colonel in the Parliamentary army during the First English Civil War. In the Second English Civil War he allied himself with the Royalist cause. English Civil Wars. He fought in South Wales and played a significant part in events between 1642 and 1649 including a senior role during the Battle of St. Fagans.
His background is uncertain but he is probably the son of a Lewis Powell and is from South Pembrokeshire, first coming to notice for his service in Ireland prior to the start of what was to become the First English Civil War, playing a part in quelling an insurrection in Ireland which was presumably his first taste of military life.
In 1642 and the start of the war he returned to Pembrokeshire, apparently still owed arrears of pay for his Irish service and joined with John Poyer and Rowland Laugharne in the defence of Pembroke Castle and offensive actions throughout Pembrokeshire. He was appointed governor of Cardigan Castle by Laugharne in 1644 as soon as it was captured and successfully defended it against a Royalist attack led by Sir Charles Gerard, 1st Earl of Macclesfield.
In 1646 he was governor of Tenby Castle and by 1648 he was deputising for Laugharne when he was called to London and held command of all the forces in West Wales at the time of the order for supernumeraries to lay down their arms. Rice Powell followed John Poyer's lead and resisted this order, making a joint declaration in favour of the Royalist cause.
Apparently the rebels has been assured of Royalist support for their stance and at Carmarthen Powell's forces met those of Colonel Fleming and Colonel Horton, who attempted to bring Powell's force to battle near Llangathen resulting in a skirmish during which Fleming in retreat was shot and Horton was forced to withdraw as far as Brecon to resupply.