_John MCKAIN ________+
| (1783 - ....)
_Lewis MCKAIN _______|
| (1819 - 1887) |
| |_Margaret HOSSACK ___
|
|
|--William Archibald MCKAIN
|
| _____________________
| |
|_Mary CROSSON _______|
(1829 - ....) |
|_____________________