Lord Ganesha married Prajapati Visvarupa’s daughters. Their names are Siddhi and Buddhi. This is what Shiva Purana Rudra Samhita says about the marriage of Lord Ganesha:
Brahmā said:—
1. In the meantime Prajāpati Viśvarūpa became delighted and happy on knowing their intention.
2. Prajāpati Viśvarūpa had two daughters of divine features. They were famous as Siddhi and Buddhi
They were exquisite in every part of their body.
3. The lord Śiva and Pārvatī, jubilantly celebrated the marriage of Gaṇeśa with them.
4. The delighted gods attended their marriage as desired by Śiva and Pārvatī.
5. Viśvakarman made all arrangements for the marriage. The sages and the gods were full of great joy.
6. The happiness that Gaṇeśa derived by virtue of this marriage, O sage, cannot be adequately described.
7. After some time, the noble Gaṇeśa begot two sons, one each of his wives. They were endowed with divine features.
8. The son Kṣema was born to Siddhi. The highly brilliant son Lābha was born to Buddhi.
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