Samjna

Surya was marrie with Samjna und Chaya, the shadow.

Samjna was the daughter of Vishvakarma, the architect of the Gods. She could not bear the energy of her husband and created a double of her, Chaya, the shadow.

Surya went to Vishvakarma and he took off some of his energy. From the planed he made Vishnu’s disc (Sudarshana Chakra), Shiva’s trident, Karttikeya’s lance and Kubera’s vimana.

Surya had three children with Samjna – Vaivasvata, Yama, Yami – and with Chaya – Sani, Tapati, Savarni.

For the story visit
http://www.sushmajee.com/shani/1-kathaa-1-19/1-sun.htm