+———Earle Harrison MACDOWALL (1908 – 1996)
  |    
  MACDOWALL (Jan 1944 – Jan 1944)
  |                        
  |                   +———Joseph SPARROW (England – )
  |                   |
  |               +———John SPARROW (1783 England – )
  |               |   |    
  |               |   +———Ann
  |               |
  |           +———John A. SPARROW (1806 – 1894)
  |           |
  |       +———Robert Colbert SPARROW (31 Jul 1843 – 4 Oct 1921 Fitzroy, Ontario, Canada)
  |       |   |    
  |       |   +———Elizabeth COLBERT (1816 – 1892)
  |       |
  |   +———Arnold William Arthur SPARROW (31 Oct 1876 Antrim, Ontario, Canada – 30 Sep 1950 Arnprior, Ontario, Canada)
  |   |   |            
  |   |   |       +———MCGINLEY
  |   |   |       |
  |   |   |   +———Robert MCGINLEY (Ireland – )
  |   |   |   |
  |   |   +———Elizabeth MCGINLEY (8 Aug 1842 – 1926)
  |   |
  +———Isabel J. L. SPARROW (1921 Ontario, Canada – 2007)
      |    
      +———Isabel MOFFATT (Mar 1884 Ontario, Canada – 1967)