+———William “Bill” COWAN ( – living)
  |    
  Virginia May COWAN (19 Aug 1972 – 16 Feb 2001)
  |                            
  |                       +———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)
  |           |
  |       +———Robert McGinley SPARROW (Oct 1867 – 1947)
  |       |   |            
  |       |   |       +———MCGINLEY
  |       |   |       |
  |       |   |   +———Robert MCGINLEY (Ireland – )
  |       |   |   |
  |       |   +———Elizabeth MCGINLEY (8 Aug 1842 – 1926)
  |       |
  |   +———Robert Serson SPARROW (3 May 1908 Fitzroy, Ontario, Canada – 1996 Kinburn, Ontario, Canada)
  |   |   |        
  |   |   |   +———William SERSON (5 Jan 1844 – 11 Oct 1919)
  |   |   |   |
  |   |   +———Annie Luella SERSON (Dec 1871 – 1964)
  |   |       |    
  |   |       +———Martha SCOTT (5 Aug 1851 – 22 Nov 1908)
  |   |
  +———Sally Lillian SPARROW ( – living)
      |                    
      |               +———William (unverified) BOYLE (abt 1770 Ireland – Ireland)
      |               |
      |           +———Thomas BOYLE (abt 1793 of Ballymodan, County Cork, Ireland – 18 Nov 1846 Pakenham, Ontario, Canada)
      |           |   |    
      |           |   +———Sophie (unverified) DAVIES
      |           |
      |       +———William BOYLE (7 Jul 1815 of County Cork, Ireland – 30 Dec 1895 Thornhill, Manitoba, Canada)
      |       |   |    
      |       |   +———Margaret “Mary” CHECKLEY (abt 1791 of Ireland – 3 Feb 1836 Pakenham, Ontario, Canada)
      |       |
      |   +———William V. Charles BOYLE (11 Jun 1856 Huntley Twp, Ontario, Canada – 18 Jul 1926 Fitzroy, Ontario, Canada)
      |   |   |    
      |   |   +———Elizabeth CURTIS (1819 County Cork, Ireland – 8 Aug 1856 Pakenham, Ontario, Canada)
      |   |
      +———Elizabeth Curtis “Bessie” BOYLE (7 Jun 1904 Ontario, Canada – 1981 Pakenham, Ontario, Canada)
          |        
          |   +———Henry POOLE
          |   |
          +———Susanna “Susan” POOLE (20 Dec 1860 Fitzroy, Ontario, Canada – 1933 Pakenham, Ontario, Canada)
              |    
              +———Susanna