Background
Eruch was born in Bombay to Zoroastrian parents, Byramshaw and Gaimai Jessawala. His father Byramshaw was an engineer, and was the Chief Inspector of Boilers for The Central Provinces, a high post in the British Indian government. Due to constant relocations of his father, Eruch was placed in an orthodox Zoroastrian boarding school in Nashik at the age of 6.
When his father eventually bought an estate, Jessawala was transferred to a Catholic school at the age of 8 where he excelled as a student, eventually planning to study engineering like his father.