That he was a good King
Duncan's decision to name his son, Malcolm, as his heir instead of Macbeth, and his decision to stay at Macbeth's castle without informing him both upset Macbeth.
Macbeth, yet guards were framed and Lady Macbeth was the plotter!
Malcolm (Duncan's son) did not kill Macbeth, it was Macduff (Thane of Fife).
That he was a good King
banquo
she gets the guards drunk so that they pass out allowing Macbeth to kill duncan.
Lady Macbeth gets them drunk, then frames them for the murder of Duncan.
In the play "Macbeth" by William Shakespeare, King Duncan was murdered by Macbeth using a dagger.
He thinks that Macbeth is a "good guy", Fleance killed Banquo and Duncan's sons killed the king.
They skip town. Malcolm goes to England and Donalbain goes to Ireland.
Macbeth compares Duncan's murder to a bell signaling Duncan's eternal sleep. He expresses remorse and guilt over the treacherous act he has committed.
The guards who serve King Duncan in William Shakespeare's play "Macbeth" are known as the thanes.