Something that has appeared here before, but something I am considering doing some serious work on, so any and all thoughts would be appreciated.
In 1382, Richard II of England married Anne of Bohemia, a marriage that was quite unpopular at the time, for it brought little to England, and Richard had to pay Anne's relations himself. Now in otl, their marriage was childless, and when Anne died in 1394, from the plague, Richard was grief stricken, and some claim, that is what drove him further downward into tyranny, as Anne was often someone who could get him to relent in some of his harsher punishments.
Now, the POD, is as the title suggests, that Richard and Anne have a son, named Edward born in 1384. Now assuming certain events such as the Lords Appellant still happen as otl, alongside the requisite punishments, and Anne still dies in 1394, with Richard banishing Henry of Bolingbroke, and later denying him his titles.
If we say Edward, Prince of Wales, aged 15 is a relatively educated young man, who has the people's trust, what might happen should Henry land in England as he did otl.