Five important incarnations of Lord Shiva

• Lord Shiva is among one of the most principle deities of Hinduism. 
• He is the supreme God within Shaivism one of the three most influential denominations in contemporary Hinduism. 
• Shiva is the eternal 'transformer' within the Trimurti, the Hindu trinity that includes Brahma and Vishnu.
• At the highest level, Shiva is regarded as the formless, limitless, transcendent and the primal Aatman(soul) of the Universe.
• Let us take a look at some of the incarnations(Avatars) of Lord Shiva:

1. Tatpurush

Tatpurush is the most popular third incarnation of the Lord Shiva which was manifested in the 21st Kalpa of the planet known as Peetavasa. It was appeared by the prayer of the Lord Brahma.

2. Naamdeva

During the 20th Kalpa known as the Rakta, Lord Brahma got his complexion changed to a red. Another entity was appeared from him of the red complexion, which was name by him as a Namadeva. It is considered as the Naamdeva was also the incarnation of Lord Shiva.

3. Aghoresh

In the Shiva Kalpa (after the Peetavasa Kalp), an entity of black color complexion was appeared by the Lord Brahma when he was in deep meditation state. Lord Brahma named that entity as Aghor Shiva and considered as another form of Lord Shiva.

4. Sadhojat

During the 19th Kalpa known as Shweta Lohit, there appeared an entity by the Lord Brahma while he was meditating, which was named by him as Sadhojat. It is considered that this form of the Lord Shiva was the first incarnation. Four disciples of the Sadhojat were appeared by his own body named Nandan, Vishwanandan, Sunand and Upanandan.

5. Ishan

In the Vishwaroop Kalpa, Ishan form of the Lord Shiva and Saraswati were manifested. Four divine entities like Mundi, Shikhandi, Caste and Ardhamundi were manifested from the Ishan Shiva. Lord Brahma was blessed by all of them for the creation facility.

source: http://www.varanasi.org.in/avatars-and-incarnations-of-lord-shiva

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