Mike,scotty and butch are nicknames, I have 25,000+ Powries and their kin. 268 Robert Powries. The common scottish naming pattern (not always followed) first son-named for patenal grandfather second son-named for maternal grandfather first daughter-named for paternal grandmother second daughter-named for maternal grandfather maiden names were often given as middle names
If a Robert had ten sons, all ten would name their first sons Robert, then they named some Robert after uncles,so many families had many Roberts nicknamed Robin, Robbie, Rob, Bobbie, Bob, at nauseum....
It did not mean the first robert died and then a second was named for the relative. I have families with three Roberts and two James... the easiest way to tell which family someone belongs to is to locate the spouse's maiden name. We have a few William Wallace, Hammish, even a micheal Angelo Powrie. None of my Dad's siblings went by their given names, Omar was Nokie, Alvin Larch went by Jack,Pearl went by Penny. Some are named with the same name, over and over.
I occasionally have to ask for places, if they immigrated, but I have never failed to give many more generations than the person knew about, averaging 7-10 generations. I have over 80,000 records from 16 different archives and libraries. I love original names like Warick Powrie in New Zealand.