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One character is a young man with the surname Whittaker and nickname Joey. He has a twin sister - the main character of my story, in fact - that will need a name; and they both need smooth middle names that fit well with their first and last names. Their names should not be incredibly "matchy", like Michael and Michelle, but maybe a subtle matchy technique if you have any ideas.
Their parents will also need full names. They share their last name with their parents; however, if anyone wants to know, the mother's maiden name was Sutton.
(Sorry if I appear strict - I'm not really like that - I just want the best names I can get for my characters.)