_Randolph MCCOY Sr.__+
                                                  | (1825 - 1914) m 1849
                       _Samuel MCCOY _____________|
                      | (1855 - 1921) m 1882      |
                      |                           |_Sarah MCCOY ________+
                      |                             (1829 - 1899) m 1849
 _Rex Calvin MCCOY ___|
| (1900 - 1972)       |
|                     |                            _____________________
|                     |                           |                     
|                     |_Martha Elizabeth JACKSON _|
|                       (1858 - 1942) m 1882      |
|                                                 |_____________________
|                                                                       
|
|--Rex Samuel MCCOY 
|  (1926 - 2003)
|                                                  _____________________
|                                                 |                     
|                      ___________________________|
|                     |                           |
|                     |                           |_____________________
|                     |                                                 
|_Trudy WILLIAMS _____|
  (1902 - 1974)       |
                      |                            _____________________
                      |                           |                     
                      |___________________________|
                                                  |
                                                  |_____________________