Conversation so far:
Where was Kaikhosru Shapurji Sorabji born?
Kaikhosru Shapurji Sorabji was born in Chingford, Essex.
What year was Kaikhosru Shapurji Sorabji born?
Kaikhosru Shapurji Sorabji was on 14 August 1892.
Who was Kaikhosru Shapurji Sorabji's father?
Kaikhosru Shapurji Sorabji's father, Shapurji Sorabji, was a civil engineer of Parsi parentage from Bombay, India.

Question: What about his mother?
Self-contained rewrite: Who was Kaikhosru Shapurji Sorabji's mother?