The term "Shaivite" is overused nowadays. For instance, Iyer Brahmins are often called Shaivites, but they're actually followers of Adi Shankaracharya's Smartha sect (which I discuss here and here) and simply adopt Shiva as their Ishta Devata. True philosophical Shaivism is relatively rare nowadays (in contrast to Vaishnavism which is pretty common). Now one genuine Shaivite sect is the Lingayat sect, which I discuss here. It was founded by the 12th century philosopher Basava.
Now in one of his Vachanas or poems, Basava says this in an attempt to prove that Shiva is supreme:
Indra was born to Amritavati and Somasambhu
Brahma was bom to Satyarishi and Jyesthadevi
Visnu born to Vasudeva and Devaki
The Enlightened was born to Nabhiraj and Marutadevi
All known to the worlds as fashioned out of the womb
Has Lord Kudalasangamadeva, who lives outside
The cycle of birth and death
Any father and mother?
Some of these are recognizable: Vasudeva and Devaki are the parents of Vishnu's incarnation Krishna, and Nabhiraj and Marutadevi are the parents of Rishabha the founder of Jainism. But my question is, who are Amritavati, Somashambhu, Satyarishi, and Jyeshthadevi, the parents of Indra and Brahma mentioned by Basava?
Note that I'm not actually asking who Indra and Brahma's parents are. Indra's parents are Kashyapa and Aditi, and Brahma's father is Vishnu, or Vishnu's Vyuha form Aniruddha to be more precise. But I want to know who the figures are mentioned by Basava. Are there any scriptures that mention them in connection to Indra and Brahma?