Pitṛs

Pitṛs or Pitris (devanāgarī: पितृ) is a Sanskrit term that means "fathers". There are two classes of Pitris in Hinduism: the human and the divine. The human pitris (manuṣyāḥ pitaraḥ) are the spirits of the departed ancestors. They are often remembered annually. The divine Pitris (devāḥ pitaraḥ) are gods of different origins, forms, grades, and abodes.

Helena Petrovna Blavatsky used this term in her writings to refer to the divine fashioners of humanity:

Pitris (Sk.). The ancestors, or creators of mankind. They are of seven classes, three of which are incorporeal, arupa, and four corporeal. In popular theology they are said to be created from Brahmâ’s side. They are variously genealogized, but in esoteric philosophy they are as given in the Secret Doctrine.

Pitris in theosophy

THE Progenitors of Man, called in India “Fathers,” Pitara or Pitris, are the creators of our bodies and lower principles. They are ourselves, as the first personalities, and we are they. Primeval man would be “the bone of their bone and the flesh of their flesh,” if they had body and flesh. As stated, they were “lunar Beings.” The Endowers of man with his conscious, immortal EGO, are the “Solar Angels”—whether so regarded metaphorically or literally. The mysteries of the Conscious EGO or human Soul are great. The esoteric name of these “Solar Angels” is, literally, the “Lords” (Nath) of “persevering ceaseless devotion” (pranidhâna). Therefore they of the fifth principle (Manas) seem to be connected with, or to have originated the system of the Yogis who make of pranidhâna their fifth observance (see Yoga Shastra, II., 32.) It has already been explained why the trans-Himalayan Occultists regard them as evidently identical with those who in India are termed Kumâras, Agnishwattas, and the Barhishads.

Further reading

• Pitris at Theosopedia