My son has a baby by a married woman, he wants to put his name on the birth certificate, but is being told he can not due to Florida law, that the husband name has to be put on the certificate even though the woman and man are separated,has been for 7 years. I want to know if this is true.

Generally, if a child is born to a married couple , the husband is the presumed father. And his name will go on the because.

In that case, your son NEEDS to go to court for joint custody and visitation. The court will require a DNA test to prove paternity. If I were your son, I would start shopping for an attorney.