My boyfriend divorced his wife for cheating, not knowing the baby she carried was his. She gfave birth, They live in Florida, while they were still married. He had a paternity test done, and is the father. He got a copy of the birth certificate when she was about a year old. Ex-wife gave the baby her last name (she and everyone else called her by his last name), he wants to change the surname, or even hyphenate it. She refuses to consent. How does he change, or hyphenate, the daughter's name?

