_Juan COSTILLA ______
                                                   | (1820 - ....)       
                             _Juan Pablo COSTILLA _|
                            | (1862 - 1932) m 1899 |
                            |                      |_Josefa VILLARREAL __
                            |                        (1820 - 1875)       
 _Everardo Tobias COSTILLA _|
| (.... - 1987)             |
|                           |                       _Juan MENDEZ ________
|                           |                      | (1850 - 1950)       
|                           |_Margarita MENDEZ ____|
|                             (1882 - 1940) m 1899 |
|                                                  |_Margarita GARCIA ___
|                                                    (1860 - ....)       
|
|--Ismael Tobias COSTILLA 
|  
|                                                   _____________________
|                                                  |                     
|                            ______________________|
|                           |                      |
|                           |                      |_____________________
|                           |                                            
|_Antonia TOBIAS ___________|
                            |
                            |                       _____________________
                            |                      |                     
                            |______________________|
                                                   |
                                                   |_____________________