How about editing in the history that Britain intervened in the middle of the civil war on the unionists side. That way what you said is kept in mind, and current British control of Ireland is still explained
 
Again, if I had more than a work around method for spacing and a phone, I would have included much more. But as it is right now...My desktop has a fried motherboard, my laptop has a broken keyboard, and typing on the phone takes about as long as control Ving in spaces. Not to mention auto correct... 

Once I'm up and running again, I'll add more to the background. But for now, the skeleton will be good enough. :p