» Tue Oct 04, 2011 10:13 pm
Litt from the UESP wiki:
"Orc family names are always prefixed depending on gender, "gro-" for males, and "gra-" for females, and are followed by the father's or mother's name, depending on gender."
Male name gro-fathers name.
Female name gra-mothers name.
The Grey Prince was an exception because he was a bastard I'm guessing.