"Ganesha is frequently depicted with Saraswati, the Goddess of learning and music, and Lakshmi, the Goddess of wealth and prosperity. Since Ganesha is associated with similar attributes as the goddesses, many devotees believe that they are his wives in previous incarnations. This assumption is reinforced by their worship along with Ganesha, especially during Diwali. But no myths support this notion. The deities are worshiped together simply because they represent similar goals."
January 1, 1970
https://en.wikiquote.org/wiki/Diwali