Asquith and Bonar Law both undid Home Rule

Anthony J Jordan tells us that 100 years ago Arthur Griffith advised that a "provisional government be set up in Dublin" by John Redmond and Edward Carson (Letters, August 4).

That ignores the problem that, led by Carson and James Craig, a half a million unionists had signed a covenant to “use all means necessary”, including civil war, to stop a parliament being set up in Dublin. Despite that, the Home Rule Act, giving limited self rule to Ireland, had already been passed by the most powerful parliament in the world and signed into law by the monarch.

The problem was that it was not implemented.