My husband the step father of 2 of my children want to adopt them their real father does ring every now and then can the kids have two fathers and hyphen their last names?
I don't see why not. When two people marry, the women sometimes
wants to keep her maiden name but also take his name, so she takes
both last names and hyphens them. Or I have even seen a single mom
use both the dad's last name and her last name (hyphenated) for
their child. Please visit this page on my website to get detailed
information on this subject.