I live in California and am originally from Chicago.There a many Tapias in Chicago who originated from Jalisco.My father and grandfather are both from Guadalajara. There are also quite a few Tapias in California from the same origin. This branch of Tapias is all over the state of Calif and Texas.
I'm intriqued about your father and grandfather. What are/were their names? Uncles and aunts? Great uncles or aunts?