I have an incomplete family tree for the Haddocks of Bishopswearmouth, Sunderland which starts with William d 1858 m Mary Hudson 1802 who d 1868 with a son William Thomas b 28/12/1822 d 1909 m 1846 Anne Gardner (1826 - 98) 10 children inc George Matthew 1863 - 1955 m Margaret Atkinson.
I believe no other male descendants survived much after WW1
George Matthew (my great grandfather) had two sons William d 1918 in France Francis Atkinson 1898 - 1949 m Jane Reid Henderson two sons: William 1932 - 1999 married Mary Elizabeth Chapman 1959 three children William James (me) / Robert Chapman / Mary Frances
George Henderson b. 1936 married Katie Arnott one daughter Gail
There is more information buried in family papers etc which I have not yet investigated (I'm only just beginning)