I have been able to find out a little more since my posting. Bernardo did have two brothers that we know about.
Descendants of Vicente Vaca
1 Vicente Vaca b: Abt. 1860
.. +Saturnina Roa b: Dec 02, 1862 in Guanajuato, Mexico m: Apr 27, 1881 in Huanimaro, Guanajuato, Mexico
2 Jose Julio Rito Roa b: Apr 13, 1882 in Huanimaro, Guanajuato, Mexico
2 Bernardo V. Roa b: Aug 20, 1888 in Quiceo de Abasolo, Guanajuato, Mexico d: Apr 19, 1937 in California
.... +Salome Araujo b: Oct 22, 1896 in El Cerro, Guanajuato, Mexico d: Dec 20, 1988 in Mission Hills, Los Angeles, CA m: Jan 28, 1915 in Los Angeles, Los Angeles, CA
2 Jose Eulalio Roa b: Dec 17, 1889 in Huanimaro, Guanajuato, Mexico