Louisiana, La. Op. Att’y Gen. 963 (1942) provides Common Law Name changes invalid according to The Right to Control One’s Name, Kushner UCLA law review:
In the 1940s an attorney general opinion in Louisiana asserted that the state did not recognize a common law right to change one’s name. See La. Op. Att’y Gen. 963 (1942). Louisiana law is derived from the French civil law tradition, rather than the British common law tradition; this likely accounts for the difference between Louisiana’s approach to abrogation and that of other states.