Acharya Ganesha as a named figure does not appear as a standard, well-attested person in the core Jain scriptures. In Jain tradition, there are 11 Ganadharas (chief disciples) of Mahavira who are repeatedly named in various sources, with Gautama (Indrabhuti Gautama) generally recognized as the leading Ganadhara. The other Ganadharas include Agnibhuti, Vayubhuti, Sudharmaswami, Arya Vyakta, Mandikata Mauryaputra, Akampita, Acalabharata, Metarya, and Prabhasa. Different Jain traditions (Śvetāmbara and Digambara) preserve these lists with some variations, and the exact names can differ between sources. There is no universally accepted, detailed “life” story for an Acharya named Ganesha in the standard Jain hagiographies. If you meant Ganadhara Ganesha in a particular sect’s tradition, please specify the tradition, and I can summarize what that tradition says about him.

You can read a brief note about how Ganadharas function in Jain tradition here