both parents last names. instead of just using your dads last name they use both last names of both parents. looked it up in my text book
If you have two last names, you can choose to use either one or both of them.
When writing a name with two last names, you typically include both surnames, often connected by "y" (meaning "and" in Spanish) if applicable. For example, in Spanish-speaking cultures, a person named María García López would use both last names. In English contexts, you can separate the last names with a hyphen, like "Smith-Jones," or simply write them together without a hyphen, as in "Smith Jones." Always follow the individual's preference for how they want their name presented.
To cite someone with two last names in a research paper, use both last names in the citation. Separate the two last names with a hyphen or connect them with an "y" if that is the convention in the person's culture.
Names don't always mean something...
When addressing someone with two last names, you can use both names or choose to use the last name they prefer. It is polite to ask the person how they would like to be addressed.
To cite an author with two last names in APA format, you should list both last names in the reference list and in-text citation. Use a hyphen between the two last names in the reference list, but do not use a hyphen in the in-text citation.
To cite an author with two last names in a research paper, use both last names in the citation. Separate the two last names with a hyphen. For example, if the author's name is Maria Rodriguez Lopez, the citation would be (Rodriguez-Lopez, Year).
It isn't known :S but they both have diff last names, you should ask them there twitter is BustinJieberss and their youtube is BustinJiebers ! i hope i helped!
Yes, you can change your last names. Check with the state you live in, their are forms that you would need to fill out and pay a court processing fee and then the name change would become effective.
People in this time didn't have middle names. Their names told what they did or where they were from. Sometimes it gave both. Middle and last names came later.
You put down both of their last names in your question...How hard is it to figure out that Jacobs and Callaway are two DIFFERENT names? O_o