+———Thomas “Tom” GRASBY (abt 1870 Ontario, Canada – 1913 Saskatchewan, Canada)
  |    
  John Thomas Roy “Roy” GRASBY (30 Oct 1900 RM of Odanah, Manitoba, Canada – )
  |            
  |       +———William SOUSTER (abt 1821 Upper Canada, Canada – bet 1861 and 1871 Ontario, Canada)
  |       |
  |   +———John SOUSTER (15 Feb 1849 Lanark Co, Ontario, Canada – 1 Jul 1918)
  |   |   |    
  |   |   +———Janet (abt 1827 Ontario, Canada – )
  |   |
  +———Janet “Jennie” SOUSTER (abt 1875 Ontario, Canada – 1951 Asquith, Saskatchewan, Canada)
      |    
      +———Harriet Dorcilla BURLY (28 Aug 1855 Frontenac Co, Ontario, Canada – 8 Jul 1930)