I looked into their names a bit more and found
in reply to a message by rooster
It looks like Valentine is a family name as it was Kevin's father's middle name and Kevin's brother Gary uses it as his 'stage' last name. Kevin's birth name was Kevin George Knipfing but uses Kevin James as his 'stage' name. Also Shea's middle name is Joelle and she was named after the ballpark Shea Stadium and Steffiana de la Cruz was born Stephanie Anne Zantua.