Which child of Joao Ignacio and Maria Philomena do you descend from? I descend through their son Manuel Ignacio SOUZA (1977-1952) who married Maria CALDEIRA-VIEIRA (1884-1924. They had 9 children, and I descend from their oldest daughter Lucia "Lucy" SOUZA (1901-1961) who married Carl OTHOLT (1890-1970). Lucy and Carl had 6 children, and my grandmother, Juliette OTHOLT, is their youngest.
I have Waialua, Honolulu County, HI listed as the death place of Joao and Maria Philomena. I may have been mistaken on this. Where did you find that they died in Oakland, CA?
I also have a small difference with the children they had. I have Jose, Antonio Ignacio, Joao, Manuel Ignacio, Jacintho, Maria Conceiaoi, Augusto, Eugene, and Helen listed as their children.
I am very interested to see what information you may have on this family.