_William Fergus MCKAIN _+
                               | (1826 - 1912) m 1851   
 _John Elgin MCKAIN ___________|
| (1860 - ....) m 1890         |
|                              |_Katherine Anne DOBBIN _
|                                (1832 - 1925) m 1851   
|
|--Henry Fergus MCKAIN 
|  (1892 - 1917)
|                               ________________________
|                              |                        
|_Marguerite LE JEUNE-VINCENT _|
   m 1890                      |
                               |________________________
                                                        
[2950] death:Lieutenant, 13th Sqdn., Royal Flying Corps. (Killed in aerial combat, flying BE2d 5875, died of wounds on ground)
[2952] burial:Ref. V.A.33