Original: Edgard Victor Achille Charles Varèse, whose name was also spelled Edgar VarèseAfter he arrived in the USA he commonly used the form 'Edgar' for his first name but reverted to 'Edgard', not entirely consistently, from the 1940s.
Simplified: Edgard Victor Achille Charles Varèse, whose name was also spelled Edgar VarèseAfter he arrived in the USA he commonly used the form Edgar for his first name but reverted to Edgard, not entirely consistently, from the 1940s.