+———Richard HELSON
      |
  +———Frederick Ivan HELSON (23 Aug 1885 – 24 Aug 1964 Ottawa, Ontario, Canada)
  |   |    
  |   +———Christina Melissa RIBBLE
  |    
  Edith Phyllis HELSON (10 Sep 1918 Ottawa, Ontario, Canada – 1990 White Rock, British Columbia, Canada)
  |                
  |           +———Edward OWENS (1780 Burrisocaine, County Tipperary, Ireland – 23 Mar 1855 Fitzroy, Ontario, Canada)
  |           |
  |       +———Edward William OWENS (1818 Tipperary, Ireland – 31 Dec 1901 Fitzroy, Ontario, Canada)
  |       |   |    
  |       |   +———Elizabeth LEDGER (1791 Tipperary, Ireland – 1827 Fitzroy, Ontario, Canada)
  |       |
  |   +———Ledger Graham OWENS (16 Feb 1851 – 13 Jun 1915 Ottawa, Ontario, Canada)
  |   |   |    
  |   |   +———Elizabeth “Eliza” ALEXANDER (1825 Huntley, Upper Canada – 1891 Ontario, Canada)
  |   |
  +———Edith E. OWENS (1887 Fitzroy, Ontario, Canada – 1972 Ottawa, Ontario, Canada)
      |        
      |   +———William BLAIR
      |   |
      +———Katherine Campbell Elizabeth BLAIR (3 Feb 1863 Pakenham, Ontario, Canada – 27 Dec 1927 Nepean, Ontario, Canada)
          |    
          +———Elizabeth MCCALLUM