Coindre's body was found on 20 May 1826 in Blois, where he was assigned at the time as Senior Vicar of the Diocese. For various reasons, there was long held some suspicion that his sudden and unexpected death might have been a suicide. There is evidence, though, that he was one of a number of the local clergy who were victims of an outbreak of acute meningitis. One consequence of this shadow regarding his death was that the first Superior General of the Institute rarely referred to him or his teachings. Following his death, his brother, the Reverend François Coindre, his cousin, succeeded him in the office of Superior.