<Tr> <Th> 5 </Th> <Td> Alistair McGowan </Td> <Td> 4 October 2007 (2007 - 10 - 04) </Td> <Td> 6.17 </Td> </Tr> <Tr> <Th> 6 </Th> <Td> Graham Norton </Td> <Td> 11 October 2007 (2007 - 10 - 11) </Td> <Td> 6.88 </Td> </Tr> <Tr> <Td_colspan="4"> It was discovered that Norton's Walker ancestors were originally planters from Wentworth, South Yorkshire, who were sent over from England in the 17th century to take over Irish land . Some members of his family fought for the British monarchy during the Irish Rebellion of 1798 and took part in the Carnew massacre . Another member of his family was later killed in battle by the United Irishmen . </Td> </Tr> <Tr> <Th> 7 </Th> <Td> Matthew Pinsent </Td> <Td> 18 November 2007 (2007 - 11 - 18) </Td> <Td> 6.57 </Td> </Tr>

Who do you think you are series 12