Story about brahma according to Hindu mythology?

Brahma is one of the three children of Brahm (Kaal). The other two being Vishnu and Shiv. 

Brahm keeps the three sons unconscious through Durga until they grow up. When they grow up, Brahm brings Shri Brahma Ji into consciousness on a lotus flower, Shri Vishnu Ji on a snake bed (Shesh Shaiya) and Shri Shiv Ji on a Kailash mountain. He then makes them assemble, gets the trio married via Prakriti (Durga), and appoints them (Brahma, Vishnu and Shiv) as ministers of one department each, in three loks [Heaven (Swarglok), Earth (Prithvilok) and Nether world (Patal lok)] in one brahmand; for instance, Shri Brahma Ji of Rajogun department, Shri Vishnu Ji of Satogun department and Shri Shiv Shankar Ji of Tamogun department.

When the three children became young, then mother Bhavani (Durga/Prakriti/ Ashtangi) said, "You may churn the ocean". When churned the ocean for the first time, four Vedas came out (Jyoti Niranjan created four Vedas with his breaths and ordered them by secret speech to reside in the ocean) and Brahma took them all. When the three children brought the Vedas to mother, she said that Brahma may keep the four Vedas and read them. 

On churning the ocean the second time, got three girls. Mother distributed all the three. Prakriti (Durga) acquired her own three other forms (Savitri, Lakshmi and Parvati) and hid in the ocean. Then came out during churning of the ocean. That same Prakriti

acquired three forms and was given in the form of 'Savitri' to god Brahma, 'Lakshmi' to god Vishnu and 'Parvati' to god Shankar, as wives.

{When the ocean was churned the third time, Brahma got fourteen gems; Vishnu and other gods got 'nectar'. Demons got alcohol and the righteous Shiva stored the 'venom' in his throat. All this happened a lot afterwards.}

When Brahma started reading the Vedas, he found that someone else is the Master-Purush (God) of the lineage, the Creator of all the brahmands. Brahma Ji told Vishnu Ji and Shiv Ji that Vedas describe some other God as the Creator, but Vedas also say that even they do not know the mystery. It has been indicated in the Vedas to ask some Tattavdarshi Saint2. Brahma came to mother and narrated everything to her. Mother used to say that there is no one else other than me. I am the sole doer. I am the

Almighty, but Brahma said that Vedas have been created by God so, they cannot be untrue. Then Durga said that your father has sworn that he will never appear before you. Brahma said, "Mother, you have become untrustworthy now. I will surely find out that Purush (God)." Durga said, "What will you do if he would not appear before you?" Brahma said that I will not show you my face. On the other hand, Jyoti Niranjan has pledged that he would never appear before anyone i.e. would never appear in form in his actual 'Kaal' form in the 20 brahmands. He only appears in the twenty-first brahmand where no one else is there.