1  Henry ISAACS 
   +  Leah HARRIS 
      2  Elizabeth Baird ISAACS (Oct 1882 Ontario, Canada – 25 Dec 1971 Washago, Ontario, Canada)
         +  Melvin MARSHALL (10 Nov 1878 Washago, Ontario, Canada – 9 Apr 1922 Washago, Ontario, Canada)
            3  Henry “Coleman” MARSHALL (24 Feb 1910 Orillia, Ontario, Canada – 9 Feb 1983)
               +  Flossie Olga BUCKNAM (3 Aug 1910 Severn Bridge, Ontario, Canada – 17 Sep 2001)
                  4  Glen MARSHALL ( – living)
                     +  Darlene FARQUHAR 
                        5  Debbie MARSHALL 
            3  Leah “Viola” MARSHALL (29 Nov 1911 Orillia, Ontario, Canada – 1996 Simcoe, Ontario, Canada)
               +  John Andrew HUGHES (25 Nov 1909 Orillia, Ontario, Canada – 1970)
            3  Nora MARSHALL (abt 1913 Washago, Ontario, Canada – )
               +  Herman RENTON 
                  4  Jean RENTON 
                     +  William CAMERON (Toronto, Ontario, Canada – )
                  4  Jaqueline RENTON 
                  4  Donna RENTON 
                     +  Bernard CLAUSE 
            3  George E. MARSHALL (abt 1915 Ontario, Canada – )
               +  Agnes WOOD 
                  4  Donna Gail MARSHALL 
                     +  Bernard CLAUDE 
                  4  Brenda Anne MARSHALL 
                  4  Sharon MARSHALL 
                  4  Marilyn MARSHALL 
                  4  Gary MARSHALL 
            3  John “Jack” MARSHALL (1916 Washago, Ontario, Canada – 20 Aug 1916 Orillia, Ontario, Canada)
            3  Marjorie MARSHALL (1920 Ontario, Canada – )
               +  Donald BOYD (Orillia, Ontario, Canada – )
                  4  Douglas BOYD 
                     +  Helen NELSON 
                  4  Joanne BOYD 
                  4  Pauline BOYD 
                  4  Donna BOYD 
            3  Lloyd MARSHALL ( – d. inf.)
            3  Bruce MARSHALL 
               +  Gwen COOK 
                  4  Julie Ann MARSHALL 
                  4  Janice MARSHALL 
                  4  John MARSHALL 
                  4  Kirk MARSHALL