+———Arthur STEVENSON (bef 1790 Ireland – )
              |
          +———Hans STEVENSON (1812 Ireland – aft 1871)
          |
      +———Arthur STEVENSON (1853 – )
      |   |    
      |   +———Elizabeth DRENNAN (1812 Ireland – aft 1871)
      |
  +———Benjamin STEVENSON (1887 – 1964)
  |   |    
  |   +———Eleanor Isabella “Isabella” PATTERSON
  |    
  Douglas Clair STEVENSON (1931 – 1997)
  |    
  +———Delia MCKITRICK (1892 – 1972)