+———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)
  |    
  Robert CROSSLEY (18 Jan 1913 Preston, Lancashire, England – 1974 Preston, Lancashire, England)
  |    
  +———Jane Alice MARSDEN (1880 Preston, Lancashire, England – 1957 Amounderness, Lancashire, England)