+———Mel JOHNSTON
  |    
  Jason JOHNSTON 
  |                    
  |               +———William MCELROY
  |               |
  |           +———Robert MCELROY (16 Mar 1856 Ireland – 16 Jan 1916)
  |           |
  |       +———William Lorne “Lorne” MCELROY (8 Aug 1888 R. M. of South Dufferin, Manitoba, Canada – 1958)
  |       |   |    
  |       |   +———Mary Elizabeth “Elizabeth” MORRISON ( – 1946)
  |       |
  |   +———Robert “Bob” MCELROY
  |   |   |    
  |   |   +———Frances GREENACRE ( – 1988 Manitoba, Canada)
  |   |
  +———Gloria MCELROY
      |    
      +———Verna HOWETT