Disagree with my fiancé

My fiancé wanted our son to be Xavier Louis . Louis being his dads middle name and I didn’t like it so we compromised to Joseph Louis cuz I said my first boy will be names that and he said fine cuz his dads first name is jerry anyways I’m like cool . So we have 3 weeks till our pumpkins due date and he wants him to be a junior but I absolutely HATE the idea of juniors plus I don’t like my fiancé’s name and he knows it but he’s serious. He even said hes naming our second son in the future Xavier . No .

When our son arrives will it be wrong if I write Joseph Louis ?? I don’t want him to be mad at me . And I feel I should have a say so in my child’s name .