<Tr> <Th> Criminal charge </Th> <Td> Conspiracy to kidnap and bank robbing </Td> </Tr> <Tr> <Th> Spouse (s) </Th> <Td> Kathryn Kelly </Td> </Tr> <P> George Kelly Barnes (July 18, 1895--July 18, 1954), better known as "Machine Gun Kelly", was an American gangster from Memphis, Tennessee, during the prohibition era . He attended Central High School in Memphis . His nickname came from his favorite weapon, a Thompson submachine gun . His most infamous crime was the kidnapping of oil tycoon and businessman Charles F. Urschel in July 1933 for which he, and his gang, collected a $200,000 ransom . Their victim had collected and left considerable evidence that assisted the subsequent FBI investigation that eventually led to Kelly's arrest in Memphis, Tennessee, on September 26, 1933 . His crimes also included bootlegging and armed robbery . </P> <Table> <Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (September 2015) (Learn how and when to remove this template message) </Td> </Tr> </Table>

What was the nickname for a gangsters favorite weapon