<Tr> <Th> Children </Th> <Td> Henry Mills (step - son) Hope Swan - Jones </Td> </Tr> <Tr> <Th> Grandchildren </Th> <Td> Lucy (step - granddaughter) </Td> </Tr> <Tr> <Th> Other relatives </Th> <Td> David Nolan (father - in - law) Snow White (mother - in - law) Neal Nolan (brother - in - law) Ella / Jacinda Vidrio (stepdaughter - in - law) </Td> </Tr> <P> Captain Killian "Hook" Jones is a fictional character in ABC's television series Once Upon a Time . He is portrayed by Irish actor / musician Colin O'Donoghue, who became a series regular in the second season after making recurring appearances and has become a fan favorite since his debut . He is based on the character from J.M. Barrie's play, Peter and Wendy . </P>

When does hook die once upon a time