+———John MCNABB (11 Dec 1833 Kirkintillock, Dunbartonshire, Scotland – 19 Jul 1879)
          |
      +———Andrew Blair MCNABB (23 Mar 1870 Ontario, Canada – 22 Aug 1949)
      |   |        
      |   |   +———Andrew BLAIR
      |   |   |
      |   +———Isabella Eliza “Eliza” BLAIR (30 Mar 1828 Scotland – 8 Nov 1910 RM of Pembina, Manitoba, Canada)
      |       |    
      |       +———Grizel DOUGLAS
      |
  +———Douglas Mack “Mack” MCNABB (27 May 1910 Manitoba, Canada – )
  |   |    
  |   +———Catherine Alice Maria “Alice” SWALLOW (24 Feb 1870 Ontario, Canada – bef 22 Aug 1949)
  |    
  Douglas Walter MCNABB ( – 1986)
  |        
  |   +———Matthias PFEIL (abt 1885 Hungary – )
  |   |
  +———Katherine “Kay” PFEIL (1913 – 2 Apr 2007 Winnipeg, Manitoba, Canada)
      |    
      +———Karolina GAL (abt 1889 Hungary – )