According to the Puranas, Brahma is the son of Brahmana, and often referred to as Prajapati.

According to the Puranas, Brahma is the son of Brahmana, and often referred to as Prajapati. The Shatapatha Brahman says that Brahma was born of the Supreme Being Brahman and the female energy known as Maya. Wishing to create the universe, Brahman first created the water, in which he placed his seed. This seed transformed into a golden egg, from which Brahma appeared. For this reason, Brahma is also known as ‘Hiranyagarbha’. As per some interpretations, Brahma was born from a lotus emerging from the navel of Shri Vishnu. In the Bhagavata Purana, Brahma is portrayed several times as the one who rises from the "Ocean of Causes". Brahma emerges at the moment when time and universe is born, inside a lotus rooted in the navel of Hari (Shri Vishnu, whose praise is the primary focus in the Purana).

The stories about Brahma in various Puranas are diverse and inconsistent. In Skanda Purana, Maa Parvati, mother of the universe, is credited with creating Brahma, gods and the three worlds. She is the one who combined the three Gunas - Sattva, Rajas and Tamas - into matter (Prakrti) to create the empirically observed world. Some Puranas suggest that he is born from Shiva or his aspects. Brahma is sometimes viewed as a form (sarguna) of the otherwise formless (nirguna) Brahman, the ultimate metaphysical reality and cosmic soul in Advaita philosophy. The Vedas, the oldest and the holiest of Hindu scriptures, are attributed to Brahma, and thus Brahma is regarded as the father of dharma.

"Now then, that part of him which belongs to Tamas, that, O students of sacred knowledge (Brahmacharins), is this Rudra.
That part of him which belongs to Rajas, that O students of sacred knowledge, is this Brahma.
That part of him which belongs to Sattva, that O students of sacred knowledge, is this Vishnu.
Verily, that One became threefold, became eightfold, elevenfold, twelvefold, into infinite fold.
This Being (neuter) entered all beings, he became the overlord of all beings.
That is the Atman (Soul, Self) within and without – yea, within and without !" ~ Maitri Upanishad

In order to help him create the universe, Brahma gave birth to the 11 forefathers of the human race called ‘Prajapatis’ and the seven great sages or the ‘Saptarishi’. Brahma presides over 'Brahmaloka,' a universe that contains all the splendors of the earth and all other worlds. In Hindu cosmology, the universe exists for a single day called the ‘Brahmakalpa’. This day is equivalent to billions earth years, at the end of which the whole universe gets dissolved. This process is called ‘pralaya’, which repeats for such 100 years, a period that represents Brahma's lifespan. After Brahma's "death", it is necessary that another 100 of his years pass until he is reborn and the whole creation begins anew.! ✨🌏💫✨