That's a stupid question... 
When he was posing as an admiral at the beginning of "Chrysalis", he was Admiral Patrick as far as Nog was concerned. Why did he not just use his actual surname, unless his name was somehow Patrick Patrick?

When he was posing as an admiral at the beginning of "Chrysalis", he was Admiral Patrick as far as Nog was concerned. Why did he not just use his actual surname, unless his name was somehow Patrick Patrick?