+———Joseph WILKINSON (abt 1846 – )
      |
  +———John Thomas CROSSLEY (1875 Preston, Lancashire, England – 1948 Preston, Lancashire, England)
  |   |    
  |   +———Harriet SINGLETON (1851 Penwortham, Lancashire, England – 1907 Preston, Lancashire, England)
  |    
  Thomas CROSSLEY (17 May 1904 Preston, Lancashire, England – 3 May 1979 Preston, Lancashire, England)
  |    
  +———Jane Alice MARSDEN (1880 Preston, Lancashire, England – 1957 Amounderness, Lancashire, England)