<Tr> <Th> Uncles </Th> <Td> Tucker McCall </Td> </Tr> <Tr> <Th> First cousins </Th> <Td> Devon Hamilton </Td> </Tr> <P> Mackenzie Browning is a fictional character from the CBS soap opera The Young and the Restless . The role was last portrayed by Clementine Ford from April 1, 2009 to November 5, 2010 . Previously, the role was portrayed by Ashley Bashioum, Kelly Kruger and Rachel Kimsey . </P> <P> Mackenzie is the daughter of Brock Reynolds and granddaughter of Katherine Chancellor . Much of her history revolves around her role in the teen scene of the series, her romance with Billy Abbott, and marriage to J.T. Hellstrom . </P>

Who plays mac on young and the restless