“The law does not require males be given traditionally male names, or females traditionally female names, by their parents at birth. Additionally, there are numerous gender-androgynous names.
“The relevant issue in a name change proceeding is not whether the applicant's DNA corresponds with the traditionally male or female name preferred by the applicant. The statute does not change the sex of the applicant, only the applicant's name.”
Most Oklahoma County district judges routinely grant name changes in transgender cases.
“It's an inconvenience when you have a driver's license that has your female picture and the name is still Steven,” Harvey said. “It's just a sad thing when there's somebody like Judge Graves in the system.”
Source : https://newsok.com/article/3730378/oklahoma-appeals-court-orders-name-change-in-transgender-case