Mail Inbox Labels

hi - I have emails in my inbox , all from same person and email address, that show up under the "From" heading with different labels - or names, such as

Robert McDee, McDee Robert, robert.mcdee@XXXX.com, <robert mcdee>

Can I change these so all emails from one person show up with same name (makes searching for email by sorting 'from' more productive) ??

and what are these < > ? where did they come from

thanks

 

Yes - - they are in the address book - - and if I make a change there (in address book) like removing the last name, and save it, it "repairs" itself the next time I use mail ! ! !
sort like having NO CONTROL over how the machine works