<Li> Duncan--King of Scotland <Ul> <Li> Malcolm--Duncan's elder son </Li> <Li> Donalbain--Duncan's younger son </Li> </Ul> </Li> <Ul> <Li> Malcolm--Duncan's elder son </Li> <Li> Donalbain--Duncan's younger son </Li> </Ul> <Li> Malcolm--Duncan's elder son </Li> <Li> Donalbain--Duncan's younger son </Li>

Who wrote macbeth and when was it written