+———William MCELROY
          |
      +———Robert MCELROY (16 Mar 1856 Ireland – 16 Jan 1916)
      |
  +———Percy MCELROY
  |   |    
  |   +———Mary Elizabeth “Elizabeth” MORRISON ( – 1946)
  |    
  Kenneth MCELROY 
  |    
  +———Minnie BAYLISS