Kaitlin Olson says her kids are "really not happy" about their dad Rob McElhenney changing his name. The 'It's Always Sunny ...

While McElhenney stands by his decision, Olson told Variety in May that their sons “are really not happy about it, because they have that last name.” “And so do I, legally!” she added.

Rob Mac (center left) with the core cast of “It’s Always Sunny in Philadelphia” including wife Kaitlin Olson (far right). To drive home the “silly” preoccupation with his name change ...