Vastu Purush Mandala having 45 Devtas and Asuras.
Pitra – the Ancestor: The next energy field in South-West direction and has been termed as Pitra devta. Pitra means ancestors.
The powers inherent in your space which are responsible for providing you all the means and sources of happiness which are necessary for your survival, for sustenance of your being, relate to this energy field.
Safety, happiness and the capacity to donate are sought from Pitra devta. A new bride prays to him to sustain her race, viz., prays for male child. The power to grant the birth of a male child and to bring in a new bride is inherent in this energy field.