Would a young man be considered disobedient to his parents for marrying a girl who embraced Islam through him without their knowledge, despite the girl's and her father's consent and the fulfillment of the remaining conditions?

Obeying one's parents in marriage is obligatory, unless their prevention of their son marrying a specific girl does not cause them harm, or if it is an arbitrary prevention, or if the son is harmed by the prevention, such as fearing for himself from temptation. Christians are disbelievers, and a disbeliever has no guardianship over a Muslim woman. Among the conditions for the validity of marriage is the approval of the wife's guardian. If the director of the Islamic center acts as a judge in the city, then he takes the place of the guardian.