I was playing fallout 4. The first round I named my character 'John The Duvahkiin' (I just moved to Fallout from ES) and Codsworth called me 'Sir'. The second time I named my character 'Alex Johnson' and Codsworth called me 'Mr. Johnson'. I was wondering if there is any other surnames like this that when you choose Codsworth can call you by them.
Is there any other options like this in game? I didn't know about this and accidentally discovered it.