She is married to Lord Macbeth, the Thane of Glamis so her name (from marriage) was "Macbeth". The term 'surname' doesn't really apply, and Shakespeare certainly tells us no more.
Shakespeare doesn't go into the details of Lord and Lady Macbeth's personal names. He wasn't concerned with historical accuracy and used titles suited to his audience's understanding. Surnames as we know them were not used in the time the real people the story was based on lived, though patronymics were common. Macbeth is a given name, and though he might be known as Macbeth McFinley (or its Gaelic equivalent) this wouldn't be applied to his wife, whose given name was Gruoch. Noble families today may have surnames separate from their titles, e.g. Ralph Percy is the 12th Duke of Northumberland. The wikipedia article is very informative:https://en.wikipedia.org/wiki/Macbeth,_King_of_Scotland.
The Nigel Tranter book mentioned is not completely historically accurate but is better in this sense than Shakespeare, and paints a wonderful picture of the times.
The play is fiction and may have loosely been based on Scottish history.
Macbeth's wife was Lady Macbeth.
Macbeth did not have any children.
Her name was Gruoch.
Grouch It should be Gruoch.... She was Lady Gruoch of Scotland before she married Macbeth. Throughout the play she is usually referred to as Lady Macbeth.
she is the assistant of lady macbeth(macbeth's wife)
His wife, Lady Macbeth.
Lady Macbeth is the wife of the title character, Macbeth, a Scottish nobleman.
Not in Shakespeare's Macbeth
I do not believe there was such warning. Lady Macbeth and Macbeth were husband and wife- they were partners. No warning would be needed.
Macbeth killed King Duncan after hearing the witches' prophecies and being urged on by his wife, Lady Macbeth
Mainly Macbeth, but I suppose his power-hungry wife as well.
Macbeth's thanedom is called Cawdor.
Because you don't mess with Lady MacBeth
Seyton tells Macbeth that his wife his just died.
He sends murderers to do it.