All the brothers (Trita, Ekat and Dvita the three sons of Prajapati Gautama) were great sages and strict followers of the principles of religion. By dint of severe penances they were promoted to Brahmaloka

Expressions researched:
"All the brothers were great sages and strict followers of the principles of religion. By dint of severe penances they were promoted to Brahmaloka" |"the three sons of Prajapati Gautama"

SB Canto 1

Trita: One of the three sons of Prajāpati Gautama. He was the third son, and his other two brothers were known as Ekat and Dvita. All the brothers were great sages and strict followers of the principles of religion. By dint of severe penances they were promoted to Brahmaloka (the planet where Brahmājī lives).

SB 1.9.6-7, Purport:

Trita: One of the three sons of Prajāpati Gautama. He was the third son, and his other two brothers were known as Ekat and Dvita. All the brothers were great sages and strict followers of the principles of religion. By dint of severe penances they were promoted to Brahmaloka (the planet where Brahmājī lives). Once Trita Muni fell into a well. He was an organizing worker of many sacrifices, and as one of the great sages he also came to show respect to Bhīṣmajī at his deathbed. He was one of the seven sages in the Varuṇaloka. He hailed from the Western countries of the world. As such, most probably he belonged to the European countries. At that time the whole world was under one Vedic culture.