Shakespeare 's Lady Macbeth appears to be a composite of two separate and distinct personages in Holinshed 's work : Donwald 's nagging , murderous wife in the account of King Duff , and Macbeth 's ambitious wife Gruoch of Scotland in the account of King Duncan .
These are Donwald 's nagging , murderous wife in the account of King Duff and Macbeth 's ambitious wife in the account of King Duncan .