In Hinduism, Vamadeva (Sanskrit: वामदेव) is the name of the preserving aspect of the God Siva, one of six aspects of the universe he embodies. On a six-faced Sivalingam, Vamadeva appears on the right hand side. This face/aspect of Śiva is considered the peaceful, graceful and poetic one — the lord of the female aspect of it is associated with water.
The Brahman splits into male (Parashiva) and female (Parasakti) and manifests as the universe. The parashiva has six aspects:
Six-faced Kartikeya was created by God Siva using his third eye of all the above six faces.
The name comes from Sanskrit vāma = "left", which is the seat of the Śakti and normally associated with beauty and the female, and deva = "God".
As a God's name it is a karmadharaya and means "beautiful God".
As a man's name it is probably a bahuvrihi and means "he whose God is beautiful".
Brahma created Vamadevas, after he saw,that manasputras (the 10 sages), created by him, are not focused on creation and instead focused on meditation and ascese. Vamadeva (Rudras) created lightning, thunderbolt, clouds, rainbows, varieties of medicines all of which are immortals. They are also known as Rudras as they created immortals. Brahma then request Rudras (Vamadeva) to only create the mortals and not the immortals. Rudra (Vamdeva) saying that they could only create the immortals, stopped the work of creation.
Eleven Rudras(Vamadeva) were created by Brahma,each carry Trishula in their hand. The eleven Vamadeva(Rudras) are Ajaykapada, Ahirbudhanya, Virukapsa, Raivata, Hara, Bahurupa, Triambaka, Savitra, Jayanta, Pinaki and Aparajita.
The name Rudra literally means immortal is generally associated with Shiva. Unlike Sadyojata, Vamadeva is considered as the embodiment of power over elements of creation and further expansion of that which is created.
Vamadeva is also the name of a rishi, credited with most of Mandala 4 of the Rigveda. He is mentioned prominently in the Upanishads as well, particularly the Brihadaranyaka and Aitareya. His father was Gautama Maharishi, said to be one of the Saptarishi or seven great sages, and his brother Nodhas also has hymns in the Rigveda.