OriginsThe origins of the Diazcastillo surname can be traced back to Spain, where the combination of the last names Diaz and Castillo created a distinct surname. The name eventually spread to other Spanish-speaking countries.
Geographic DistributionThe Diazcastillo surname is most popular in Mexico, where it has a significant presence. It is also found in other Spanish-speaking countries such as Spain, Colombia, Argentina, and Venezuela.
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