This was my coursework so I tell you what I can remember:
- he realised that the Irish were never going to be satisfied until they had some form of self government. His views underwent a radical transformation from 1882 onwards as he realised that no PM was going to spend the time and resources needed to accustom Ireland to the Union therefore the only way out was some form of autonomy.
- he realised there was a genuine sense of Irish nationalism
- he began to sympathesise with Parnell and realised that it wasn't just Parnell leading the Irish where he wanted to go but a genuine wish to be responsible for their own affairs. Also the Irish MPs started putting on an impressive performance in the Commons i.e. good and sensible speeches, good points, Gladstone came to realise that the Irish could take care of their own affairs. Irish agitation was taking a more peaceful route as well unlike the activities of the Fenians in the 1860s they were now contributing to organisatons like the National League. So it was pointless to maintain the union as it was just for the sake of it.
- he realised it was the moral thing to do.
He wasn't trying to unite the Liberals as many of his contemporaries thought he was crazy proposing Home Rule and believed his bill to be unworkable. Sir William Harcourt called him a "criminal lunatic".