We have observed that Laxmi, Saraswati and Ganesha are depicted together. One may be curious about the relationship among them. According to one mythological legend, Laxmi, Saraswati and Ganesha are the offspring of goddess Durga. That is why they are together. If it is so, then why Kartikeyan is not along with them? Kartikeyan is also son of goddess Durga. One legend says that Ganesha has two wives, Riddhi and Siddhi, and two sons Shubh and Labh. Hence, Ganesha is always shown with Riddhi and Siddhi in the form of Laxmi and Saraswati. One may wonder- why they are not with their sons in the depiction to make a complete family snap? One another legend suggests that Laxmi is consort of Vishnu and Saraswati is consort of Brahma, and Ganesh is the son of Shiva and Parvati. Still we did not find the logic for them to be depicted together. One more legend says that Laxmi stays near the feet of Vishnu and Saraswati on his tongue. And many consider that both are the consort of Vishnu. It is said that Laxmi is always jealous with Saraswati. Wherever Saraswati goes Laxmi follows her and try to dispel her or Saraswati does not like Laxmi to intervene her, so whenever Laxmi approaches Saraswati, Saraswati walk away from there. As Laxmi never stay alone, so in absence of Saraswati, Laxmi brings her twin elder sister Alaxmi, the goddess of strife.
