The Thane of Cawdor was a traitor and was accordingly executed. His death left the title of Thane of Cawdor vacant which allowed Duncan to give it to Macbeth.
Macbeth gets the title Thane of Cawdor. It's not clear what might have happened to any other titles, if any, Cawdor had.
Macbeth had the title of thane of glamis and then was awarded the title of thane of cawdor
Thane of Cawfor
The nobleman who first informs King Duncan of the Thane of Cawdor's treason is Ross. He reports the events surrounding the battle and the disloyalty of the former Thane of Cawdor to the King.
Macbeth is first 'Thane of Glamis' then he is bestowed the title 'Thane of Cawdor' then king of Scotland
He gives him the title thane of Cawdor since the other Cawdor was a traitor
a thane is just an other word for lord because Macbeth owns land he is a lord so they call him a thane of what he owns Ex. thane of cawdor
Macbeth was the Thane of Glamis.
Macbeth is Thane of Cawdor, Thane of Glamis, and becomes King of Scotland.
Macbeth is first 'Thane of Glamis' then he is bestowed the title 'Thane of Cawdor' then king of Scotland
It's similar to a Lord, a position of power associated with wealth, land and heritage IHTH :)
Thane of Glamis, then Thane of Cawdor, and eventually King.