アイルランド・カトリック同盟
The Royalists enjoyed local support in much of Wales. During much of 1643, local Royalist commanders skirmished in the Welsh Marches with Parliamentarian forces based in the Midlands and commanded by Sir Thomas Myddelton and Colonel Thomas Mytton among others. Late in 1643, King Charles attempted to create a field army in North Wales and Cheshire under Lord Byron, using English regiments returned from Ireland following a negotiated armistice with Confederate Ireland, but Byron suffered a setback at the Battle of Nantwich in January 1644.