Colonel Manus O’ Cahan’s Regiment of Foot
Captain Mortimer’s company of dragoons grew out of the Regiment: musketeers started being provided with horses for scouting and raiding parties, eventually becoming classed as dragoons in March 1645.
O'Cahan's was made up of seven companies which were formed along a sectarian divide: five companies of Protestants, and two made up of Catholics. This sectarian divide would provide grounds for confusion and inter-regimental fighting (and I don't mean not so friendly fisticuffs).
Shipped to Scotland in the first half of 1644 they fought at Kinlochaline Castle; Tippermuir, where they fielded 400 men; Aberdeen; Fyvie; raided Inverary; Inverlochy, there numbers down to 200 men; Auldearn; Alford; Kilsyth; literally meeting their end at Philiphaugh; those that managed to flee Philiphaugh met their end at the siege of Inverness.
Philiphaugh saw the end of most of the Irish Brigade: with the collapse of the Royalist cause in England, Leslie's Covenanting army returned north to deal with Montrose. Montrose's Army was camped in two separate locations - the force led by O'Cahan and the other Irish divisions who had stayed with Montrose found themselves under surprise attack and hopelessly outnumbered. Montrose tried to go to aid the beleaguered Irish but was fought back and fled.
Leslie offered O'Cahan terms of surrender: If they laid down their arms and agreed to leave Scotland, they would be allowed to go free. O'Cahan agreed. Leslie captured the now unarmed force, and O'Cahan witnessed the execution of virtually his entire army including the camp followers. O'Cahan and Thomas Laghtnan were taken to Edinburgh Castle and hanged from its South Wall without a trial.
As with the other regiments of the Irish Brigade, we know about some of their flags but not which regiment carried which flag: so I picked one at random. Thankfully I ordered correctly with this regiment and selected 'Irish pike open hand' so no cutting pikes off this time. Annoyingly I still had to drill hands out as despite being described as open hand, their hands aren't. This task is much easier to achieve with the 'open hand' pack than the 'with pikes ' pack but I'd still rather have open handed pikemen who don't need their hands drilling out. There are a handful of lowland Scots, and a few headswaps to make them look a bit more exciting.
Here endeth the Irish Brigade painting.
The Regiment is re-enacted as part of the Sealed Knot's Scots Brigade
Update: since discovering the primary source material for the Catholic Confederacy flags (see here) I've reflagged the regiment. Here's what they look like now...