Mahavira’s children differ by tradition:

• Śvetāmbara (Swetambar): Mahavira is said to have married Yaśodharā (Yashoda) and to have a daughter named Priyadarśanā (also called Anojja in some texts). So, in this tradition, he had one child. You can read more here .
• Digambara: Mahavira is considered celibate and did not marry, hence no children. You can read more here .

arth (meaning) in brief:

• If you follow Śvetāmbara accounts, Mahavira had a daughter named Priyadarśanā.
• If you follow Digambara accounts, Mahavira had no wife and no children.

Note: These are the two mainstream Jain views.