 In 1982 he completed his PhD in Hindi, writing a dissertation "The Rasa mana ke pada of Kevalarama, a medieval Hindi text of the Eighth Gaddi of the Vallabha Sampradaya".He was supervised by Professor J. C. Wright, Dr. R. D. Gupta and Dr. R. S. McGregor.From 1980 to 1985, Entwistle held the post of Universitair Docent at the University of Groningen in the Netherlands where he taught Hindi and courses on Indian civilization, iconography, religion and literature.